Drey Jameson

Joe Mantiply To Open Season On Injured List

By Anthony Franco | March 28, 2023 at 10:42pm CDT

The Diamondbacks will be without top reliever Joe Mantiply start the season. Manager Torey Lovullo told reporters the southpaw will open the year on the 15-day injured list as he battles shoulder fatigue (via Nick Piecoro of the Arizona Republic). Arizona will carry Kyle Nelson on the active roster in his place.

Mantiply had a breakout 2022 campaign. The southpaw threw a career-high 60 innings over 69 appearances, posting a 2.85 ERA. Mantiply racked up grounders at an excellent 53.5% clip while punching out more than a quarter of batters faced. Perhaps most impressively, he kept his walks to a microscopic 2.5% rate, the second-lowest mark among relievers around the league.

That secured Mantiply his first All-Star nod and pushed him into high-leverage innings. The Snakes set out to deepen their bullpen this offseason with additions of Miguel Castro, Scott McGough and Cole Sulser. They’ve already lost Mark Melancon and Corbin Martin for extended stretches this spring, and now they’ll be down arguably their top reliever headed into the year. The team hasn’t provided much clarity on Mantiply’s return date.

To backfill the bullpen, the D-Backs are turning to a few less proven arms. Right-hander Drey Jameson is moving to relief, the club announced over the weekend (relayed by Steve Gilbert of MLB.com). Ryne Nelson secured the fifth starter role and Arizona elected to carry Jameson out of the big league bullpen rather than send him back to Triple-A Reno. Jameson impressed over his first four MLB starts last season but has long faced questions from evaluators about whether he can hold up as a starter, due both to a rather slight frame and some inconsistency in his control.

Meanwhile, 23-year-old righty Carlos Vargas will get a season-opening bullpen job (as first reported by Eno Sarris of the Athletic). He’s already on the 40-man roster but hadn’t previously gotten a big league call. Arizona acquired Vargas from the Guardians back in November.

The Dominican Republic native split the 2022 season between Cleveland’s top two affiliates, combining for a 3.67 ERA with a decent 24.7% strikeout rate but an alarming 11.3% walk percentage across 34 1/3 innings. He managed a 13:4 strikeout-to-walk ratio in 10 1/3 frames of three-run ball while averaging north of 100 MPH with his fastball this spring. He’s a volatile but possible high-upside arm for Lovullo to call upon in the middle innings.

NL West Notes: Gonsolin, Profar, Senzatela, Cron, Cobb, D’backs

By Mark Polishuk | March 26, 2023 at 8:10am CDT

Tony Gonsolin suffered an ankle sprain earlier this month, and the injury is already set to place the right-hander on the 15-day injured list to begin the season. The Dodgers have yet to share a more specific recovery timeline for Gonsolin, but The Athletic’s Fabian Ardaya writes that late April probably represents the earliest we could see Gonsolin make his 2023 debut. On Friday, Gonsolin did some mound work for the first time since his ankle injury.

Losing a pitcher of Gonsolin’s caliber for at least a month isn’t news for the Dodgers, but the team is better equipped than most to withstand such a significant loss to the rotation. Los Angeles had a pair of promising young arms competing for the right to be Gonsolin’s replacement, with Ryan Pepiot getting the nod over Michael Grove. Pepiot will get a chance to build on the 36 1/3 innings he threw in his MLB debut season, and establish himself as the team’s top depth option in the event of future injuries.

Latest On D-Backs’ Rotation

By Anthony Franco | March 20, 2023 at 11:28pm CDT

The Diamondbacks entered Spring Training with four rotation spots in place. Zac Gallen and Merrill Kelly are the top two on the staff. Madison Bumgarner will get another crack in the middle, while Arizona brought back Zach Davies on a one-year free agent deal to take a back-end spot.

Who would secure the fifth spot was one of the more interesting decisions for the Snakes in camp. As MLBTR’s Darragh McDonald explored in early January, that battle looked likely to come down to four hurlers: Ryne Nelson, Drey Jameson, Tommy Henry and Brandon Pfaadt. Jameson and Nelson, both of whom made their big league debuts late in the 2022 season, seemed the early favorites.

That indeed now appears to be a two-person race. Arizona reassigned Pfaadt, who is not yet on the 40-man roster, to minor league camp over the weekend. They optioned Henry to Triple-A Reno this afternoon, taking him out of consideration for an Opening Day job as well.

Neither Jameson nor Nelson has done much to seize the job this spring. The former has allowed eight runs in 9 2/3 innings, while the latter has been tagged for nine runs in the same amount of work. Jameson has at least managed a solid 12:3 strikeout-to-walk ratio, while Nelson’s 10:6 mark is less impressive.

Both pitchers fared well in very limited MLB looks last year. Jameson made four starts and posted a microscopic 1.48 ERA through 24 1/3 innings. That came with an excellent 56.1% grounder percentage and above-average strikeout and walk numbers. It was a very strong debut effort but won’t completely erase concerns about the ghastly 6.95 ERA he’d posted over the 114 Triple-A innings he’d thrown prior to his promotion. Reno is among the hardest places in affiliated ball to pitch, which certainly didn’t do him any favors. That said, some prospect evaluators have suggested the Ball State product is likelier to settle into a bullpen role than a rotation because of concerns about his command.

Nelson has had some relief concerns himself, though he’s generally credited for more advanced command than Jameson. He doesn’t throw quite as hard and didn’t miss as many bats in his brief big league look as Jameson did. Nelson had similarly strong bottom line numbers in a cup of coffee, however, allowing four runs in 18 1/3 big league frames. Over 136 innings in Reno, he’d posted a 5.43 ERA with roughly average strikeout and walk numbers.

Henry had the most MLB work of this group in 2022, starting nine games. He didn’t find the early success of Jameson or Nelson, pitching to a 5.36 ERA with below-average strikeout and walk rates in 47 innings. Henry allowed 11 runs in 16 1/3 frames in camp before being optioned. Pfaadt is arguably held in the highest regard of the bunch but is the only one who hasn’t made his big league debut. The 24-year-old made 19 starts at Double-A Amarillo and 10 with Reno last season, combining for a 3.83 ERA in 167 innings. He allowed five runs with 15 strikeouts and four walks in 12 innings this spring.

Big Hype Prospects: Walker, Baty, Volpe, Colas, Jameson

By Brad Johnson | March 8, 2023 at 4:10pm CDT

The hype is real this week on Big Hype Prospects. Numerous notable youngsters are among the top performers in the Grapefruit and Cactus Leagues.

Five BHPs In The News

Jordan Walker, 20, OF, STL (AA)
536 PA, 19 HR, 22 SB, .306/.388/.510

Walker is fourth among qualified spring hitters with a 1.429 OPS across 28 plate appearances. He’s already popped three doubles and three home runs. This column has covered Walker’s scouting traits many times. His hot play is putting him in the picture for an Opening Day role, though such an assignment is unlikely for numerous reasons. The sad truth is club control is an important consideration for teams when choosing a debut date. While new rules offer some consolation, the terms* are rather difficult to achieve. Additionally, the Cardinals have a deep roster. Nolan Arenado covers Walker’s natural position of third base. He’s converted to outfield where Dylan Carlson, Tyler O’Neill, Lars Nootbaar, Alec Burleson, and Juan Yepez are also in the mix. In addition to competition and control incentives, Walker isn’t on the 40-man roster nor does he have any experience in Triple-A.

*Namely, two new rules. A player is awarded a full year of service if they finish top two in Rookie of the Year voting. A team can gain extra draft picks if a “top prospect” makes the Opening Day roster and later finishes top three in rookie voting or top five in MVP/Cy Young voting.

Brett Baty, 23, 3B, NYM (MLB)
(AA) 394 PA, 19 HR, 2 SB, .312/.406/.544

Another frequent guest of BHP, Baty is currently sixth-best among qualified hitters with a 1.208 OPS. He has one double and one home run. He spent most of 2022 in Double-A, though he had brief trials in Triple-A and the Majors. He didn’t look overmatched in his debut even though the end results weren’t impressive. An uncharacteristic .179 BABIP entirely explains his modest 71 wRC+. Baty is competing with Eduardo Escobar who could find himself in a utility role if Baty wins the third base job. There’s also room in the designated hitter competition where Daniel Vogelbach, Darin Ruf, and Tommy Pham are expected to see the bulk of the action. None of those veterans should be considered a lock to make the Mets roster.

Anthony Volpe, 21, SS, NYY (AAA)
(AAA) 427 PA, 24 HR, .280/.358/.519

Yet another player who has been covered ad nauseum by this column, Volpe is on the cusp of his big league debut. His 1.097 OPS looks strong in the early going. In addition to a home run and two doubles, he also has three stolen bases. Volpe’s path to the starting shortstop role should be viewed as an uphill battle if only because the Yankees have given themselves a number of difficult decisions to make this spring. Volpe is plagued by the same criteria that could give the Cardinals pause regarding Walker. Additionally, Volpe has identifiable flaws as a hitter – most notably, a fly ball-oriented swing. He could find himself with a low BABIP in the Majors, especially since many pitchers have become adept at attacking this hitting profile.

Oscar Colas, 24, OF, CWS (AAA)
(AA) 225 PA, 14 HR, 1 SB, .306/.364/.563

Colas surged through the White Sox system last season, making stops in High-, Double-, and Triple-A. His time in Double-A was his most meaningful performance. He only accrued 33 plate appearances in Triple-A. Colas has a bead on Chicago’s right field job where first baseman Gavin Sheets is seen as the main competition. Colas is batting .429/.455/.476 in 22 spring plate appearances. He is known for making impactful contact. Like many products of the White Sox farm system over the years, he has a detrimentally aggressive plate approach. His first test in the Majors will be laying off competitive pitches outside of the zone. Many a prospect with comparable tools and discipline to Colas failed to stick in the Majors.

Drey Jameson, 25, SP, ARI (MLB)
(AAA) 114 IP, 8.61 K/9, 3.32 BB/9, 6.95 ERA

Jameson is competing with Ryne Nelson and others for the Diamondbacks fifth starter job. He mostly relies on two fastballs and a plus slider, though he also features a curve and changeup. In three spring outings, he’s tossed 6.2 innings with eight strikeouts, five hits, two walks, a home run, and three runs allowed. Although he’s proven a tad homer prone throughout his development, a high ground ball rate helps to salve the sting. He has the raw traits of a future workhorse. Within the next couple seasons, he could click in much the way Logan Webb clicked between his 2020 and 2021 campaigns. For those concerned about his Triple-A numbers, those are at least partly an artifact of circumstance. Reno’s starters combined for a 5.24 ERA which ranked fifth out of 10 clubs in the PCL.

Three More

Cole Ragans, TEX (25): Ragans averaged 92.1-mph with his heater last season so it raised a few eyebrows when he hit 99-mph the other day. With a number of Rangers starters banged up, there’s a decent chance Ragans will nab a start or two early in the season. I’m withholding enthusiasm until he maintains velocity in longer outings. At a minimum, the southpaw could really play up out of the bullpen.

Masyn Winn, STL (20): Though he has almost no chance of playing his way to an Opening Day assignment, Winn is making a favorable impression this spring. He has a 1.071 OPS in 17 plate appearances with a homer and two steals. Scouts want to see him adjust against competitive breaking balls but are otherwise enamored with the young shortstop. Defensively, he has an 80-grade arm but closer to 40-grade range and footwork. The arm ensures he’ll stick on the left side of the infield.

Christian Encarnacion-Strand, CIN (23): Acquired in the Tyler Mahle trade, Encarnacion-Strand has slugged at every stop along the ladder. He’s expected to reach Triple-A early this season if not right out of the gate. In 18 spring plate appearances, he has 11 hits including a double and three home runs. The profile reads like a more compactly built Franmil Reyes.

Big Hype Prospects: Lewis, Casas, Smith, Duran, Jameson

By Brad Johnson | January 7, 2023 at 1:07pm CDT

The Hot Stove has been turned off. Big Hype Prospects (and baseball at large) enters the coldest month. Still, we have much to discuss.

Five BHPs In The News

Royce Lewis, 23, SS, MIN (MLB)
41 PA, 2 HR, .300/.317/.550

A former first-overall pick, Lewis showed signs of breakout in 2020 but wasn’t able to take the field. He also lost his 2021 campaign. Encouragingly, he posted a .313/.405/.534 line in 153 Triple-A plate appearances last season. He also hit five home runs with 12 steals and an uncharacteristically high 11.8 percent walk rate. One of the main knocks against him as a hitter is overaggression. Alas, he required surgery on his ACL and is expected to be out until next June or July. While injuries have plagued his early career, he’s still managed encouraging skill growth.

This winter has served as a rollercoaster from the perspective of Lewis’ future role with the Twins. Aggressive offers to Carlos Correa made it seem as if Minnesota had a shot to sign him. Then, as we’re all aware, Correa agreed to contracts with the Giants and then the Mets. The door was open for Lewis to supplant Kyle Farmer at midseason. Now, the Twins are back in on Correa. Recent rumors make it seem as if they have a real shot. If they ink Correa, Lewis will move down the defensive spectrum.

Triston Casas, 22, 1B, BOS (MLB)
(AAA) 317 PA, 11 HR, .273/.382/.481

Casas came up in the last edition of BHP so I’ll refer you there for a description of him as a player. More recently, he’s been tied to the Marlins in trade talks. Miami is shopping its rotation depth while hunting for an impactful lineup presence. Curiously, fan reactions on social media seem opposed to a deal from both perspectives. Red Sox fans have been sold on Casas as a mid-lineup contributor. He certainly seems to check all the desirable hitter boxes – power, discipline, and a decent rate of contact. It’s well established that pitchers are less reliable than hitters from a health perspective. Sox fans would rather discuss dealing the likes of Ceddanne Rafaela as part of a package. Following the DFA of Lewin Diaz – who was once described in similar ways to Casas, Marlins fans are understandably hesitant to burn their pitching depth on a first baseman – a position many view as easy to solve in free agency. The club can stand to upgrade at nearly every offensive position.

Josh Smith, 25, UT, TEX (MLB)
253 PA, 2 HR, 4 SB, .197/.307/.249

A utility man acquired from the Yankees as part of the Joey Gallo trade, Smith technically burned his rookie eligibility last year. He demonstrated the plate discipline and contact rate for which he’s known but struggled with the quality of said contact. He blends a fly ball profile with poor barreled and hard contact rates. His 105.4-mph max exit velocity is well below league average. Fly ball hitters who make consistently weak contact typically don’t start.

Earlier in the offseason, the Rangers were reportedly shopping Smith (and the next guy) for upgrades elsewhere. He’s also in the left field mix – a deep collection of interesting but unestablished outfielders. Connecting a few dots, the Rangers recent interest in Bryan Reynolds could have implications for Smith – either because his path to playing time is that much longer or he’s been dealt to the Pirates. The Rangers are known for a fly ball-oriented approach to their hitting instruction. Smith might benefit from an organization that invests in a more balanced contact profile.

Ezequiel Duran, 23, UT, TEX (MLB)
220 PA, 5 HR, 4 SB, .236/.277/.365

As with Smith, the Rangers perhaps prematurely used Duran’s rookie year. A third baseman who has been forced off the position by Josh Jung, Duran has moderate issues with plate discipline and contact rate. He features above-average raw power as evidenced by a 110.2-mph max exit velocity. However, if he qualified, his 85.9-mph average exit velocity would have ranked among the bottom 20 in the league. Consistency held him back in his debut. Duran doesn’t have an obvious role on the Rangers roster and has much to learn in all facets of his game.

Drey Jameson, 25, SP, ARI (MLB)
24.1 IP, 8.88 K/9, 2.59 BB/9, 1.48 ERA

Jameson is one of several young pitchers battling for a rotation role with the Diamondbacks. After allowing a 6.95 ERA over 114 innings at Triple-A last season, I was skeptical about his ability to fit in a Major League rotation. Four starts did much to assuage my doubts. He’s a gimmicky pitcher who might best be used for short outings or relief work.

Pitch extension – the distance from the rubber when the pitcher releases the ball – is a trait taught by many organizations for a few reasons. The state of the arts suggests pitchers with average or better extension are more likely to have smoother mechanics. Extension also plays with perceived velocity. Jameson has among the worst extension in the league. His reach is short enough to play with hitters’ timing because his offerings feel like the crawl to home plate. It’s not uncommon to see hitters take uncomfortable swings against his two fastballs. Jameson has above-average command and also wields a slider he can throw for called strikes or swings out of the zone. His two fastballs both tunnel well with his two-location slider. Unfortunately, the heaters are very homer prone on account of his poor extension.

Three More

Ryne Nelson, ARI (24): Nelson is a typical pitching prospect possessing a four-pitch repertoire. He leans heavily on his fastball which he typically uses up in the zone to draw whiffs and weak fly balls. Neither his slider nor curve have stepped forward as his dominant breaking ball, though both offerings draw 50 grades from multiple evaluators. His changeup still lags behind his other pitches. He could slot into a high-leverage relief role. As a starter, he needs further refinement to become more than an innings eater.

Brandon Pfaadt, ARI (24): Unlike Jameson and Nelson, Pfaadt has yet to cut his teeth in the Majors. His minor league results are the most encouraging of the trio. A fly ball pitcher who generates plenty of swinging strikes and avoids free passes, Pfaadt shows advanced feel for using his repertoire to manipulate opposing hitters. There’s debate as to the quality of his specific offerings. It’s hard to pin down because he seemingly has used at least six distinct pitches.

Lenyn Sosa, CWS (22): Sosa was overmatched in a brief trial during the 2022 campaign, but he performed ably at Double- and Triple-A. He’s currently in the White Sox second base mix, competing with the likes of Romy Gonzalez and Leury Garcia. Scouts typically describe him as a future role player due to below-average athleticism. He habitually expands the strike zone.

Looking At The Diamondbacks’ Rotation Options

By Darragh McDonald | January 5, 2023 at 8:29pm CDT

It’s been a rough few years for the Diamondbacks. After making the playoffs in 2017 and then posting respectable records above .500 in the two following seasons, the last three campaigns have seen their fortunes sink. They finished last in the National League West in 2020 and 2021, then surpassed the Rockies last year for a fourth place finish. During that time, the Dodgers, Giants and Padres have all had strong seasons, making the efforts of the D-Backs feel particularly hopeless. In 2021, they finished 52-110 and 55 games out in the division.

2022 was a step in the right direction, though, and there are some exciting ingredients in place. The position player mix seems to have a lot of good momentum behind it. Even after dealing Daulton Varsho to the Blue Jays, the outfield should feature a crop of exciting youngsters, headlined by Corbin Carroll but with Alek Thomas and Jake McCarthy also in the mix. On the infield, Ketel Marte is capable of MVP-level production when healthy and at his best. Christian Walker is underrated at first base while shortstop Jordan Lawlar and catcher Gabriel Moreno are considered some of the best prospects in the league.

However, the pitching staff is a bit more precarious at the moment. In 2022, the position players posted a cumulative tally of 19.8 wins above replacement, according to FanGraphs, good enough for 15th place in the majors. But the pitchers posted a total of 7.7 fWAR, ranking them 27th. If the team is to re-emerge and start contending again, they will need to get better results from the mound. There were some potentially encouraging developments in their rotation in 2022, but still some uncertainty going forward into 2023.

It’s possible that the club will make further additions via free agency but it’s also possible that they’re done. The club’s payroll is now at $113MM, per the calculations of Roster Resource. They’ve been as high as $132MM in the past, according to Cot’s Baseball Contracts, but they were at just $91MM last year. That means they’ve already boosted the budget by more than $20MM. For now, let’s take a look at the in-house options, starting with the four veterans.

Zac Gallen

Gallen, 27, seemed to emerge as an ace in 2019 and 2020, making 27 starts with a 2.78 ERA. He had a swoon in 2021, dealing with various injuries and his ERA jumped to 4.30, but he was back in form last year. In 2022, he made 31 starts and logged 184 innings with a 2.54 ERA, 26.9% strikeout rate, 6.6% walk rate and 46% ground ball rate. He finished fifth in the voting for the National League Cy Young award and can be controlled via arbitration for three more seasons.

Merrill Kelly

Kelly, 34, parlayed a strong run in the KBO into a two-year deal with the Diamondbacks prior to the 2019 season. That deal also came with a pair of club options. Kelly pitched well enough that they triggered both options and then gave him an extension that runs through 2024 with a club option for 2025. Through four seasons with Arizona so far, he has a 3.96 ERA, 20.8% strikeout rate, 6.9% walk rate and 43% ground ball rate. He’s certainly a notch below Gallen, but he’s a solid mid-rotation option for the club.

Madison Bumgarner

After spending over a decade with the Giants, Bumgarner came to the D-Backs prior to the 2020 season on a five-year, $85MM deal. Unfortunately, his results immediately took a nosedive after the uniform switch. He had a 3.13 career ERA in his time with the Giants but has posted a 4.98 mark in his three seasons as a Snake. His walk rate is still better than average but his strikeouts have vanished. He punched out 23.9% of opponents on his previous team but it’s been just a 17.7% rate for Arizona. Now 33 years old, it’s hard to expect a sudden bounceback, though the Diamondbacks might give him a chance to try since he still has two years and $37MM left on his deal. That gives him negative trade value at this point and it would be a lot of cash to eat for a Diamondbacks team that’s never been a top spender. However, his salary goes from $23MM this year to $14MM in 2024, which could make some kind of transaction more plausible if he can find better results in 2023.

Zach Davies

Davies, 30 in February, pitched for the D-Backs in 2022. He didn’t blow anyone away but he was passable enough. He made 27 starts with a 4.09 ERA. His 17.9% strikeout rate was a few ticks below average but his 9.1% walk rate and 42.9% ground ball rate were both right around league average. He used his five-pitch mix to keep hitters from doing damage, as his hard hit rate was in the 76th percentile among qualified pitchers and his average exit velocity was in the 75th. The club agreed to a new one-year deal with him yesterday, bringing him back to hopefully provide some steady production while they evaluate their younger pitchers.

Ryne Nelson

If those four pitchers are healthy and throwing well, there will be one spot remaining for a younger pitcher. Nelson will certainly be in that mix to secure the final job. He was selected by Arizona in the second round of the 2019 draft and has been considered one of the club’s better prospects since then. He even cracked Baseball America’s top 100 list of all prospects in the league going into 2022. Last year saw him spend most of his time with the Triple-A Reno Aces, who play in the Pacific Coast League. He made 26 starts for that club with a 5.43 ERA in what is a notoriously hitter-friendly environment. His 21.6% strikeout rate and 7.9% walk rate were solid enough for him to get a major league debut in September. He made three starts in the big leagues with a 1.47 ERA, striking out 23.2% of batters faced while walking 8.7% of them. That’s a very small sample size but an encouraging one nonetheless. He’ll turn 25 in February and still has a full slate of options. He could certainly be sent back to Triple-A but an extended audition at the big leagues could be warranted as well.

Drey Jameson

Jameson and Nelson have a very similar trajectory to this point. Jameson was also selected in the 2019 draft, just ahead of Nelson by being selected between the first and second rounds, with the pick the club received for AJ Pollock signing with the Dodgers. Jameson began 2022 in Double-A but posted a 2.41 ERA in four starts and got quickly moved up to Triple-A. With the Aces, he posted a 6.95 ERA in 114 innings in that pitcher-hostile environment. However, his rate stats were decent, striking out 21.2% of hitters, walking 8.2% of them and getting grounders on 48.6% of balls in play. He also got called up to the big leagues in September, just like Nelson, making four starts with a 1.48 ERA, 24.5% strikeout rate, 7.1% walk rate and 56.1% ground ball rate. Just like Nelson, he’ll be 25 years old this season and has a full slate of options. The two seem likely to be battling each other for the final rotation spot with one likely to be optioned, but they could also both be in the mix as soon as an injury pops up.

Tommy Henry

Just like Nelson and Jameson, Henry was also nabbed in the 2019 draft. He was selected in competitive balance round B, between the second and third rounds. He posted stronger Triple-A results than the other two last year, with a 3.74 ERA over 21 starts. However, his first taste of the big leagues didn’t go as smooth as he made nine starts with a 5.36 ERA, striking out just 17.6% of hitters while walking 10.2% of them. He’s also 25 and provides a third competitor in the battle for the last rotation job, but it’s possible he’s a bit behind Nelson and Jameson based on his weaker debut. He still has a full slate of options and could be in line for more work in the minors, ready to make the jump again when needed and ready.

Brandon Pfaadt

Pfaadt, 24, began 2022 in Double-A, making 19 starts and logging 105 1/3 innings there. His 4.53 ERA might not look special, but he posted that number despite striking out 32.2% of batters faced and walking just 4.3% of them. A .370 batting average on balls in play surely inflated that ERA to a level higher than he deserved, though 17.9% of his fly balls turning into home runs may have contributed as well. The D-Backs seemed to be willing to look past that ERA, bumping him to Triple-A in August. Pfaadt took very well to the move, despite the strong offensive environment. He tossed 61 2/3 innings over 10 starts for the Aces with a 2.63 ERA, 30.6% strikeout rate and 5.8% walk rate. Based on that strong finish, he has surged up prospect rankings. He currently has the #83 slot at Baseball America, is #90 at MLB Pipeline, but FanGraphs is especially bullish and considers him the 25th best prospect in the league. He’s not yet on the club’s 40-man roster since he was only drafted in 2020 and isn’t Rule 5 eligible until this coming December, but he seems destined to make a big league debut well before then.

____________________

When combined, there are some strong elements here for the D-Backs. Gallen gives them an ace and Kelly a solid piece for the middle of the rotation. Davies isn’t terribly exciting but is fine as a backend piece. Bumgarner’s contract is underwater at this point, but he could also be a solid backend guy if he puts the past three years behind him. Those four combined don’t give the club an especially strong rotation, but the four guys behind them give the overall group plenty of upside. If one or two of the young guys have a breakout in 2023, then the rotation picture starts to look much better.

The position player core in Arizona is heavily future-focused, with Carroll, Thomas, Marte, Moreno, Lawlar and others starting to develop into a strong core that could allow the club to continually improve over the coming seasons. With the rotation, the path forward could be very similar. Prospects aren’t sure things, especially when it comes to pitchers, but the Diamondbacks need to hit on young players if they’re not going to spend like the Dodgers, Padres and Giants. For now, there are signs of hope in the desert and the upcoming season will be a fascinating one to watch.

Diamondbacks To Promote Drey Jameson

By Anthony Franco | September 14, 2022 at 7:13pm CDT

The Diamondbacks will promote pitching prospect Drey Jameson before tomorrow’s game against the Padres, reports Nick Piecoro of the Arizona Republic. They’ll need to formally select his contract to do so, but the club already has a 40-man roster vacancy after designating Wilmer Difo for assignment this week.

It’s the first MLB call for Jameson, who has been one of the organization’s more interesting pitching prospects the past few years. A supplemental first-round pick (34th overall) out of Ball State in 2019, Jameson signed for $1.4MM. Credited with a mid-upper 90’s fastball and a promising combination of secondary offerings, the right-hander looked like a potential impact arm if he could develop more consistent control. Jameson didn’t get much of an opportunity until last year, with the 2020 minor league season wiped out by the pandemic. He posted excellent strikeout numbers with solid walk rates between High-A and Double-A last year, solidifying his status as one of the better arms in the system.

FanGraphs and Keith Law of the Athletic each slotted Jameson at the back half of their Top 100 overall prospects entering the season. Baseball America and Kiley McDaniel of ESPN each had him just outside the Top 100 but placed him among the ten most talented players in a strong Arizona system. Jameson dominated through four starts at Double-A to start the year, but he’s struggled to acclimate to the minors top level.

Since being promoted to Triple-A Reno at the beginning of May, the 25-year-old has made 22 appearances (21 starts). He’s surrendered a 6.95 ERA across 114 innings, striking out a personal-low 21.2% of opponents. Jameson’s 8.2% walk rate is manageable, but he’s allowed 1.66 home runs per nine innings and been plagued by a .351 batting average on balls in play. Reno is one of the more hitter-friendly environments in affiliated ball, which has certainly been a factor, but BA’s scouting report on Jameson also notes that hitters are able to identify the ball early in his delivery, causing his fastball to play below its velocity.

That’s something Jameson and pitching coach Brent Strom will work on, but it’s also easy to see the appeal with the 6’0″ hurler. Prospect evaluators suggest his slider is a plus-plus offering (a 70 on the 20-80 scale) at its best, and Jameson also shows an average or better changeup and curveball. Adding him to the 40-man roster at the end of the season to keep him from being selected in the Rule 5 draft was a no-brainer for the D-Backs’ front office, and they’ll take the season’s final few weeks to get an early look as Jameson tries to carve out a role on the 2023 staff.

Arizona is likely to see Zach Davies hit free agency this winter, thinning out their rotation depth. Zac Gallen has cemented himself as a top-of-the-rotation arm, and Merrill Kelly is amidst the best season of his career. Madison Bumgarner has been a fixture in the starting staff since signing an $85MM free agent deal heading into 2020, but his ERA is again approaching 5.00. The veteran may not be in imminent danger of losing his rotation spot, but Arizona has begun to introduce some of their younger starting pitching options at the big league level. Jameson joins Tommy Henry and Ryne Nelson as prospects to make their MLB debuts this season. Henry has struggled but Nelson (who ironically also broke in against the Padres a couple weeks back) hasn’t allowed a run with a 13:2 strikeout-to-walk ratio through his first two starts.

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