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Jake Lemoine

Daulton Jefferies Diagnosed With Thoracic Outlet Syndrome

By Steve Adams | May 20, 2022 at 7:31pm CDT

The A’s placed right-hander Daulton Jefferies on the injured list earlier today amid a series of roster moves, also optioning lefty Kirby Snead and recalling righty Jake Lemoine and left-hander Zach Logue. The A’s originally stated that Jefferies had some nerve irritation in his right arm, but manager Mark Kotsay now gives reporters a much more ominous update, revealing that the 26-year-old righty has been diagnosed with thoracic outlet syndrome (Twitter link via Matt Kawahara of the San Francisco Chronicle). He’s receiving a second opinion.

While not as common as Tommy John surgery, thoracic outlet syndrome often requires surgical repair — an operation that involves removing a portion of the player’s rib in order to alleviate nerve pressure. The success rate for pitchers returning from TOS hasn’t been as strong as those returning from the more common Tommy John surgery, though there are plenty of examples of hurlers who’ve returned to have successful careers. Arizona’s Merrill Kelly, for instance, had thoracic outlet surgery in September 2020 and was back on the mound for a slate of 27 starts in 2021. He’s made another eight starts of 3.27 ERA ball this season.

It’s yet to be seen whether Jefferies will undergo surgery, which would likely end his season. That’ll surely hinge on what he and the A’s hear in his forthcoming second opinion. Even in the event of a non-surgical route, an absence of some note seems safe to expect.

Selected by the A’s with the No. 37 overall pick back in 2016, Jefferies entered the year with just 17 big league innings under his belt. However, the Athletics’ offseason fire sale shipped both Chris Bassitt and Sean Manaea to other clubs, opening the door for Jefferies to win a long-term spot on the starting staff. Jefferies posted a 1.17 ERA through three starts but has been rocked for 23 runs over 24 innings in his past five turns. Overall, he carries a 5.72 ERA with a 16.3% strikeout rate, a 4.7% walk rate and a 46.6% grounder rate. Metrics like fielding independent pitching (3.76) and SIERA (4.15) feel he’s been a good bit better than his ERA would indicate.

The A’s still control Jefferies for five seasons beyond the current campaign, so even if he doesn’t factor into the mix again this season, he should have ample opportunity down the road. For the time being, with Jefferies sidelined, Oakland will look to Frankie Montas, James Kaprielian, Paul Blackburn and a returning Cole Irvin, who’s slated to come off the injured list and start a game this weekend. Logue, recalled today, will probably step directly into the rotation. One of four players acquired in the trade that sent Matt Chapman to Toronto, he’s already made four appearances (three starts) and pitched to a 2.04 ERA with an 18.9% strikeout rate against a 6.8% walk rate in 17 2/3 frames.

Should the A’s need another starter in the near future, they have a pair of other newly acquired options to evaluate. Right-hander Adrian Martinez, acquired from the Padres in the Manaea trade, made his big league debut in a doubleheader against the Tigers last week and tossed 5 1/3 shutout innings with three strikeouts and no walks. Fellow right-hander and trade acquisition Adam Oller, who came over from the Mets as part of the return for Bassitt, could be an option as well. He’s already made four big league starts with the A’s, though he’s been tagged for 20 runs in 14 2/3 frames.

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Oakland Athletics Daulton Jefferies Jake Lemoine Kirby Snead Zach Logue

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Athletics Select Five Players, Designate Sam Selman

By Anthony Franco | April 7, 2022 at 3:57pm CDT

The A’s announced their Opening Day roster this afternoon, and five non-roster invitees were selected to make the big league club. Pitchers Justin Grimm, Dany Jiménez, Zach Jackson and Jake Lemoine were all added to the MLB roster, as was corner outfielder Billy McKinney.

Grimm, Jiménez and McKinney each have previous big league experience. All three were signed from other organizations this offseason. Grimm is up for his ninth MLB season, his first since a four-game stint with the Brewers in 2020. The right-hander had a nice showing in the middle of the last decade with the Cubs, posting a 3.36 ERA in 171 1/3 innings between 2014-16. He hasn’t found much major league success in the past five years, but he punched out an excellent 33.6% of opponents with the Mariners Triple-A affiliate last season.

Jiménez’s big league time consists of two appearances with the Giants in 2020. The righty has been of interest to the Oakland front office for some time, as they selected him in the Rule 5 draft at the end of that season. He didn’t stick on the active roster, though, and the 28-year-old spent last season at Triple-A in the Blue Jays system. Jiménez pitched to a 2.22 ERA with an incredible 39% strikeout rate there, although he also walked 13.4% of batters faced.

McKinney is a former A’s first-rounder. Traded to the Cubs before he made his MLB debut, he’s suited up with five different teams over the past four years. The left-handed hitting outfielder owns a .215/.286/.404 line in a bit more than 700 plate appearances. McKinney has flashed some power potential, but he’s punched out in 26% of his trips to the dish. The 27-year-old joins Stephen Piscotty, Seth Brown and Chad Pinder in the corner outfield mix for skipper Mark Kotsay.

Jackson, 27, was a third-round pick by the Blue Jays out of the University of Arkansas in 2016. The 6’4″ righty — who has worked exclusively out of the bullpen as a pro — was selected by the A’s in the minor league phase of the 2020 Rule 5 draft. He split last season between Double-A Midland and Triple-A Las Vegas, working 28 innings of 2.57 ERA ball across the two levels. The Tulsa native remarkably fanned 41.2% of opponents, albeit with an 11.4% walk rate.

Lemoine was a fourth-round pick of the Rangers in 2015 out of the University of Houston. The right-hander has also worked solely in relief as a pro, pitching his way up to Triple-A in the Texas system. Lemoine hit minor league free agency at the end of the season and signed with the A’s. He owns a 4.81 ERA with an underwhelming 18.9% strikeout percentage in that time, but Lemoine has induced grounders on over the half the balls in play against him in each of his Triple-A seasons.

To create 40-man roster space, the A’s needed to free three spots. They’ve designated southpaw Sam Selman for assignment, tweets Matt Kawahara of the San Francisco Chronicle. The other two spots, according to the club’s transactions tracker at MLB.com, were freed by placing pitchers Deolis Guerra and Brent Honeywell Jr. on the 60-day injured list.

Selman just landed in Oakland last month when he was claimed off waivers from the Angels. The 31-year-old southpaw has pitched with the Giants and Anaheim over the past three seasons, combining for a 4.77 ERA in 54 2/3 frames. Selman doesn’t have particularly strong strikeout, walk or ground-ball numbers, but he’s been a nightmare for left-handed hitters. Same-handed batters have just a .171/.307/.329 line in 102 plate appearances against Selman. He has a minor league option remaining.

Guerra’s and Honeywell’s absences were expected. The former recently underwent surgery after experiencing forearm tightness this spring. The latter was shut down from throwing indefinitely after suffering an olecranon stress reaction in his elbow.

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Oakland Athletics Transactions Billy McKinney Brent Honeywell Dany Jimenez Deolis Guerra Jake Lemoine Justin Grimm Sam Selman Zach Jackson (b. 1994)

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