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Luis Frias

Guardians Sign Luis Frias To Minor League Deal

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The Guardians have signed right-hander Luis Frias to a minor league deal with an invite to big league Spring Training, per a club announcement.

Frias, 27 in May, signed with the Diamondbacks out of the Dominican Republic as an amateur and made his pro debut back in 2016. After slowly making his way through the lower levels of the minors in his early years with the club, Frias quickly rose from High-A all the way to Triple-A during the 2021 season. While he struggled to a 4.93 ERA in 23 starts across three levels of the minors that year, that didn’t stop Arizona from giving Frias his first big league opportunity down the stretch. He pitched fairly well in that brief cup of coffee, with a 2.70 ERA and three strikeouts in 3 1/3 innings of work, though his five walks represented a clear red flag regarding how his command would play at the big league level.

Those control issues manifested in the form of a brutal 2022 season. Frias’s sophomore campaign in the desert scarcely could have gone worse, as he posted a 10.59 ERA in 17 big league innings of work while once again walking (17) more batters than he struck out (14). His 3.99 ERA at Triple-A offered some level of optimism, though even that was held back by a 12.3% walk rate at the level. Despite his struggles, Frias’s tantalizing stuff was enough to convince Arizona to keep him in the fold for 2023, and he delivered the best season of his career in return. Though he walked 12.2% of opponents in the majors that year, Frias posted a 4.07 ERA that was 9% better than average by measure of ERA+ in 31 innings of work. His 18.7% strikeout rate was lackluster, but in terms of pure run prevention his results were those of a perfectly adequate middle reliever.

Unfortunately, Frias’s performance went back off the rails in 2024. In 13 MLB appearances split between the Diamondbacks and Blue Jays, the right-hander struggled to a 13.97 ERA and 5.55 FIP while recording just 9 2/3 total innings of work. Things even looked dire at the Triple-A level during his time in Arizona, as he posted a lackluster 4.88 ERA for the club’s affiliate in Reno. Fortunately for Frias, however, he dominated at Triple-A late in the year after being plucked off waivers from the Snakes. He posted a 0.96 ERA and a 27.9% strikeout rate for his new club’s Buffalo affiliate, and while that wasn’t enough to convince the Jays to keep him on their 40-man roster this winter it was evidently enough to earn Frias a look from the Guardians this winter.

While Frias isn’t likely to break camp as part of a crowded Cleveland bullpen, he’ll now have the opportunity to work with one of the league’s best pitching development organizations in hopes of further harnessing his potential and sorting out his command going forward. In the meantime, he’ll serve as a non-roster depth option for the Guardians out of the bullpen who could be called upon in the event of an injury.

Blue Jays Claim Michael Petersen, Outright Genesis Cabrera

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The Blue Jays announced they’ve claimed reliever Michael Petersen from the Marlins. Toronto outrighted Génesis Cabrera and Luis Frías off the 40-man roster. Both players elected free agency. Toronto also designated righty Emmanuel Ramírez for assignment.

Petersen is on the move for the second time in a few months. Miami grabbed the right-hander off waivers from the Dodgers in September. He allowed four runs across 5 2/3 innings to finish the year. Petersen had made 11 appearances with the Dodgers. He closed his debut campaign with a 5.95 earned run average through 19 2/3 innings.

The 30-year-old Petersen had much better numbers in 33 innings at the Triple-A level. He posted a 1.64 ERA while striking out a massive 35.2% of opponents. The native of the United Kingdom still has a couple options remaining, so he’ll serve as a bullpen depth piece if the Jays keep him on the 40-man roster.

Cabrera’s tenure in Toronto ends after a season and a half. The Jays acquired the southpaw from the Cardinals midway through the ’23 season. Cabrera pitched well down the stretch and returned for a second season. The results were solid enough, as he posted a 3.59 ERA while logging 62 2/3 relief innings. Cabrera had a subpar 18.5% strikeout rate and walked nearly 11% of his opponents, though. MLBTR contributor Matt Swartz projected him for a $2.5MM salary if tendered a contract for his final arbitration year. The Jays evidently weren’t willing to pay that price given Cabrera’s shaky K/BB profile.

Toronto grabbed Frías off waivers from the Diamondbacks late in the year. The 6’3″ righty was blown up for eight runs in 3 1/3 frames. He has a 7.38 ERA over 58 big league appearances. Frías was a reasonably well-regarded prospect who throws in the mid-90s, but he hasn’t shown any kind of strike-throwing consistency in the majors.

Ramírez, 30, was another late-season waiver acquisition. He came over from Miami in early September. Ramírez didn’t make an appearance for the Jays after allowing a near-7.00 ERA over 15 games for the Fish. He’ll presumably find himself on waivers in the next few days.

Blue Jays Claim Luis Frías Off Of Waivers From Diamondbacks

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The Blue Jays have claimed Luis Frías off of waivers from the Diamondbacks, according to his transaction log on MLB.com. Arizona designated the right-hander for assignment on Thursday to make room for catcher Andrew Knizner on the 40-man roster. As Ben Nicholson-Smith of Sportsnet first noted, Frías will report to Triple-A Buffalo. Toronto had two open spots on the 40-man roster, so no corresponding move will be necessary.

Frías has spent his entire career in the Diamondbacks organization; he signed with Arizona as a 17-year-old international free agent in 2015. The righty made his MLB debut in 2021, and since then, he has pitched 57 2/3 big league innings with a 6.55 ERA and 5.42 SIERA. He throws hard, averaging close to 96 mph on his four-seam fastball, but he has struggled to induce enough strikeouts at the MLB level. What’s more, he has walked 43 of the 276 batters he has faced; his 15.6% career walk rate is barely lower than his 18.1% career strikeout rate. Unfortunately, his numbers at Triple-A Reno aren’t much better. He has a 4.88 ERA and 6.32 FIP this season in 24 innings pitched. Throughout his career, he has a 4.26 ERA over 124 2/3 innings with the Reno Aces.

All that said, Frías is still just 26 years old, and he was once a relatively well-regarded prospect. Before he graduated from prospect status during the 2022 season, FanGraphs ranked him as the No. 12 prospect in the D-backs system, while Baseball America and Keith Law of The Athletic had him at No. 17. Baseball America ranked him as highly as No. 8 ahead of the 2020 campaign, writing “He could be a force in the rotation if it all clicks. Otherwise, his path might lead him to a high-leverage relief role.” While his days as a starting pitcher are likely all in the past, the Blue Jays must be hoping Frías still has a future as a big league reliever. He’ll provide some extra depth for their bullpen this year, which ranks last in the AL in ERA and second-last in SIERA. As for next year, he’ll be out of options, so Toronto will either need to add him to the Opening Day roster or designate him for assignment.

Diamondbacks Claim Andrew Knizner

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The Diamondbacks have claimed catcher Andrew Knizner off waivers from the Rangers and optioned him to Triple-A Reno, per announcements from both clubs. The backstop was designated for assignment by Texas earlier this week. Arizona designated right-hander Luis Frías for assignment to open a 40-man spot.

Knizner, 29, was non-tendered by the Cardinals at the end of last year then signed with the Rangers, agreeing to a $1.825MM salary. He’s not considered a strong defender but put up a respectable .241/.288/.424 batting line with St. Louis last year while hitting ten home runs in 241 plate appearances. The resulting 92 wRC+ indicates he was 8% worse than the league average hitter but that’s not bad by backup catcher standards.

The Rangers were likely hoping for something in that ballpark but didn’t get it. They sent him to the plate 93 times this year as backup to Jonah Heim but Knizner slashed .167/.183/.211. He only hit one home run and drew walks at a tiny rate of 1.1%, a far drop from last year’s 5% clip, which was already subpar. Texas acquired Carson Kelly from the Tigers prior to the deadline and nudged Knizner off their roster.

For the Diamondbacks, there’s sense in putting in the claim and hoping for a bounceback. Most of their playing time behind the plate this year has gone to Gabriel Moreno and Tucker Barnhart but neither is on the active roster now. When Moreno was on the injured list earlier in the year due to a sprained left thumb, José Herrera was recalled to pair with Barnhart. When Moreno was ready to return, the club decided to keep Herrera, so Barnhart was designated for assignment and released last month. But Moreno went back on the IL again earlier this week, this time due to a left adductor strain.

Adrian Del Castillo was added to the roster to take Moreno’s place and pair with Herrera. The Snakes evidently feel okay riding with that duo for now, but sending Knizner to Reno gives them some extra depth and gives Knizner a chance for some regular plate appearances in a hitter-friendly setting.

The length of his optional assignment could have impacts for him personally. He came into this season with four years and 21 days of service time. A new year rolls over at 172 days, meaning he needs 151 days in the majors this year to hit the five-year mark. He added 123 days to that before the Rangers optioned him prior to his DFA, so he’s still shy of the line but could get over it if he’s recalled at some point for a few weeks.

Frías, now 26, has spent his entire professional career in the Diamondbacks’ organization. An international signing out of the Dominican Republic in 2015, he climbed his way through the minor league system and was added to the club’s 40-man roster in November of 2020, keeping him out of that year’s Rule 5 draft.

He has spent the past four years providing the Diamondbacks with an optionable relief arm. Players normally only have three option years but are sometimes granted a fourth. As MLBTR covered previously, a club is granted a fourth option on a player who has exhausted the first three but without playing five full seasons, with a “full” season defined as 90 active days either in the majors or minors. The shortened 2020 season reportedly does not count. It appears Frias didn’t play a “full” season until 2019, then 2020 didn’t count, so he only had four “full” seasons after 2023.

Over his four seasons being shuttled between the big leagues and the farm, he has thrown 57 2/3 major league innings with a 6.55 earned run average. His 18.1% strikeout rate, 15.6% walk rate and 41.7% ground ball rate are each a few ticks worse than league average.

In the minors, he’s racked up more strikeouts but with the control still being an issue. From the start of 2021 to the present, he has thrown 215 1/3 innings on the farm with a 4.43 ERA. He has struck out 28.5% of batters faced but given out walks at a 10% clip.

Frías will be out of options next year, so perhaps he was running out of time with the Diamondbacks. Since the trade deadline has passed, they will have to put him on waivers in the coming days. If another club puts in a claim, they could option him for the rest of the year but he would have less roster flexibility starting next year. He has between one and two years of service time and therefore has five extra years of club control still won’t be arbitration eligible this winter.

Diamondbacks Select Humberto Castellanos

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The D-Backs announced they’ve selected right-hander Humberto Castellanos onto the major league roster. Arizona also recalled lefty reliever Joe Jacques from Triple-A Reno, a move which was reported this afternoon. To clear the necessary spots on the MLB roster, the Snakes optioned southpaw Brandon Hughes and placed lefty Blake Walston on the 15-day injured list with inflammation in his throwing elbow. Arizona also reinstated righty Luis Frías from the 15-day IL and optioned him to Reno.

Arizona had an opening on the 40-man roster, which they’ll use to give Castellanos his first MLB look in two years. The Mexican-born hurler pitched in 25 games, including 16 starts, for the D-Backs between 2021-22. He turned in a 5.30 ERA over 90 innings before undergoing Tommy John surgery in August 2022. That led Arizona to outright him off their roster at the end of the season and forced him to sit out all of last year.

The Diamondbacks brought Castellanos back on a minor league contract over the winter. He’s healthy again and has logged 43 2/3 innings over 10 appearances in Triple-A. Castellanos has a 4.57 earned run average that is quite impressive considering Reno is among the toughest places to pitch in affiliated ball. He has punched out a solid 24.3% of opposing hitters, although he has also issued walks at a career-high 11.4% rate.

For most of his MLB career, Castellanos has shown the opposite profile: plus control without the ability to miss many bats. He has a modest 16.6% strikeout rate with a 7.3% walk percentage in 100 2/3 innings between the Astros and D-Backs. Castellanos doesn’t throw especially hard, but he can work out of the rotation or in long relief for Torey Lovullo. He still has a minor league option, allowing the Diamondbacks to send him back to Reno at any point without putting him on waivers.

Walston, a first-round pick in 2019, has made his first three MLB appearances this season. The North Carolina native has allowed four runs over 12 2/3 innings, striking out 11 against nine walks. It’s not clear how long he’ll be out of action. The Diamondbacks will presumably play things cautiously with any elbow issue for one of their more talented young pitchers.

D-backs Select Logan Allen, Transfer Eduardo Rodriguez To 60-Day IL

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The D-backs announced Wednesday that they’ve selected the contract of left-hander Logan Allen from Triple-A Reno and transferred lefty Eduardo Rodriguez from the 15-day IL to the 60-day IL to open a roster spot. The Snakes also recalled righty Justin Martinez from Triple-A. Right-hander Luis Frias and left-hander Tommy Henry were optioned to Reno to creative active roster space for Allen and Martinez.

It’ll be the first big league action since 2022 for the 26-year-old Allen (not to be confused by the other left-hander named Logan Allen, who solidified himself in the Guardians’ rotation with a strong rookie campaign in 2023).

The older Allen also pitched for Cleveland previously, to make matters more confusing. He’s a former eighth-round draft pick who’s appeared in parts of four big league seasons, working to a combined 5.89 ERA in 96 1/3 frames between Cleveland, San Diego and Baltimore. In a dozen innings with Reno, he’s pitched to a 3.00 ERA with nine strikeouts, three walks and a 50% ground-ball rate.

The “60-day” term on Rodriguez’s IL stint is retroactive to his original placement and does not reset to today. While Arizona had hoped he’d only miss a month originally, the veteran southpaw recently experienced renewed shoulder discomfort during a throwing session and had his rehab program paused. In light of that setback, it’s not especially surprising to see him pushed to the 60-day IL. His original placement was retroactive to March 25, meaning he’s now sidelined through at least Friday, May 24.

With Rodriguez now shelved for another five weeks at least, Arizona’s rotation will consist of Zac Gallen, Merrill Kelly, Jordan Montgomery and Brandon Pfaadt in the top four spots. Montgomery has also yet to make his season debut but it scheduled to do so on Friday. Twenty-six-year-old righty Ryne Nelson currently holds the fifth spot, but he’s yielded eight runs in 13 2/3 innings this season and carries a 5.31 ERA in 157 2/3 frames dating back to last year. His grip on that rotation spot is not exactly iron-clad.

Injured List Activations: Davies, Whitlock

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Updates on some prominent players returning from the injured list…

  • The Diamondbacks reinstated Zach Davies from the 15-day IL, while also calling up Drey Jameson from Triple-A and optioning right-handers Brandon Pfaadt and Luis Frias.  Davies made just two starts and threw 9 1/3 innings before going on the IL in early April due to a strained left oblique, but he’ll now return to Arizona’s rotation, beginning with tonight’s game against the Red Sox.  Between Davies’ injury and Madison Bumgarner’s release, the D’Backs have turned to several of their younger pitchers to try and stabilize the rotation, but none of Ryne Nelson, Tommy Henry, Pfaadt, or Jameson have done particularly well in starting duty.
  • Garrett Whitlock will be the opposing starter against Davies tonight, as the Red Sox have activated the right-hander from the 15-day IL.  The corresponding move took place yesterday, as Boston optioned left-hander Brennan Bernardino to Triple-A following Friday’s 7-2 win over the D’Backs.  Whitlock has missed a month due to ulnar neuritis, or essentially inflammation of the funny bone near his right elbow.  Whitlock has a 6.19 ERA over three starts and 16 innings this season, and while his results as a starter have been middling over the last two seasons, the Red Sox will continue to give Whitlock looks in the rotation.  Struggling veteran Corey Kluber will be moved to the bullpen to accommodate Whitlock’s return to the starting five.

Diamondbacks Option Alek Thomas

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The Diamondbacks announced today that they have optioned outfielder Alek Thomas to Triple-A Reno, recalling right-hander Luis Frías in a corresponding move.

Thomas, 23, has been one of the club’s most notable prospects in recent years. He was selected in the second round of the 2018 draft and featured on Baseball America’s top 100 list in three straight years starting in 2020, with his speed and defense drawing particularly high praise.

He’s now been in the majors for roughly a full season of work, getting into 152 games between last year and this year. The speed and defense parts of his game have been apparent, with Statcast pegging his sprint speed in the 89th percentile among qualified position players this year, though he’s stolen just seven bases in 11 attempts in his career thus far. In terms of his glovework, he’s already accrued nine Defensive Runs Saved and seven Outs Above Average in center field in his short career, as well as earning a grade of 3.7 from Ultimate Zone Rating.

The problem has been his work at the plate. Though Thomas hit very well in the minors, he hasn’t produced much in his 534 major league plate appearances thus far. He has 10 home runs but has walked in just 5.6% of his trips to the plate and has slashed .223/.270/.340 for a wRC+ of 68. That includes a paltry .195/.252/.327 line here in 2023. A career .257 batting average on balls in play likely suggests there’s a bit of bad luck in there, but it’s been a fairly uninspiring showing overall.

The Diamondbacks went into the winter with a surplus of young outfielders, including Thomas, Corbin Carroll, Jake McCarthy and Daulton Varsho. They felt good enough about the group that they were frequently rumored to be discussing those players in trades, eventually sending Varsho to the Blue Jays for Gabriel Moreno and Lourdes Gurriel Jr. However, Thomas is now the second member of that group to wind up back in the minors after posting disappointing results, as McCarthy was sent down last month.

In addition to his own struggles, the demotion of Thomas seems to have been spurred by the ascendance of Dominic Fletcher, who was promoted a few weeks ago and has hit .377/.400/.604 in his first 15 games. He won’t sustain a .429 BABIP forever but it seems the D’Backs are riding the hot hand and will give Fletcher a chance to stretch his results over a longer sample of playing time. He figures to be the regular center fielder for now, flanked by Gurriel and Carroll with Pavin Smith in the fourth outfielder slot.

Thomas, meanwhile, will head to Reno and try to get back into a groove at the plate. From a service time perspective, he came into this season with 151 days and has already gone over the one-year mark, which is 172 days. Assuming he’s recalled at some point this season, today’s option won’t affect his free agency trajectory but it could impact his ability to reach arbitration after 2024 as a Super Two player, depending on the eventual length of time between now and his next recall.

IL Placements: Brubaker, Middleton

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Catching up on some injured-list transactions around baseball…

  • The Pirates placed right-hander JT Brubaker on the 15-day injured list, retroactive to September 16.  Right-hander Luis Ortiz was called up to take Brubaker’s spot on the active roster.  Brubaker was officially listed as sidelined due to right arm inflammation, though lat soreness was given as the reason for his early exit from Thursday’s game, when he lasted just three innings.  Over 141 1/3 innings and 27 starts for the Bucs this season, Brubaker has a 4.58 ERA and some unimpressive Statcast numbers, though his SIERA is a more favorable 3.95.  His ability to eat innings could put him in the conversation for a spot in Pittsburgh’s rotation next season, even if he doesn’t make it back for one more start in 2022.
  • The Diamondbacks placed right-hander Keynan Middleton on the 15-day IL due to a sprained left big toe.  Righty Luis Frias was called up from Triple-A in the corresponding move.  The toe sprain will likely end what has been an injury-plagued season for Middleton, who missed a couple of months due to elbow inflammation and a right ankle sprain.  Between the injuries and time in the minor leagues, Middleton was limited to 17 innings in 18 appearances with the D’Backs, and he posted a 5.29 ERA over that rather small sample size.  Now in his sixth MLB season, Middleton has yet to regain the early promise of his first two seasons with the Angels, before Tommy John surgery sidelined him in 2018.  He inked a minors deal with the D’Backs last winter and probably seems likely to be back on the open market this offseason in search of another non-guaranteed deal.

Diamondbacks Place Kyle Nelson, Cooper Hummel On Injured List

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The Diamondbacks announced a series of roster moves, including the placement of left-hander Kyle Nelson and outfielder Cooper Hummel on the injured list.  No designation was specified, which indicates that the placements are related to COVID-19.  With right-hander Edwin Uceta also optioned to Triple-A after yesterday’s game, the D’Backs will fill the three roster vacancies with infielder Yonny Hernandez and right-handers Luis Frias and Jacob Webb.  Frias was called up from Triple-A, while Hernandez and Webb were recalled from the taxi squad.

Nelson has been one of the most effective members of Arizona’s bullpen, posting a 1.23 ERA, 30.2% strikeout rate, and a 3.8% walk rate over his first 14 2/3 innings of the season.  After struggling at both the Triple-A level and in 10 1/3 big league innings with Cleveland in 2019-20, Nelson’s early-season performance could indicate that he has harnessed the big strikeout potential he showed throughout his minor league career.  The Diamondbacks claimed Nelson off waivers from the Guardians back in November.

Hummel is in his rookie season, with a .190/.313/.345 slash line (92 wRC+ and OPS+) to show for his first 99 plate appearances as a big leaguer.  The switch-hitter has seen a lot of DH and pinch-hitting duty, and Hummel has also received some starts in left field when a left-hander is on the mound (thus relegating David Peralta to the bench).  Hernandez is also a switch-hitter, though Jordan Luplow figures to more directly take over Hummel’s role while Hummel is sidelined.

As always with the COVID list, it is possible Nelson or Hummel could be activated as early as tomorrow, if their placement was only due to a close-contact situation or symptoms without a positive test.  If either has tested positive, Nelson/Hummel will miss a minimum of 10 days, unless they meet the criteria (two negative tests, clearance from three physicians, 24 hours without a fever) for early activation.

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