Amendt underwent shoulder surgery Tuesday, Jack Sommers of SI.com reports.
Amendt finished the 2025 campaign with a 3.03 ERA and 1.54 WHIP over 29.2 innings at Triple-A Reno. The 25-year-old righty won't get the chance to follow up his breakout season, however, as his shoulder procedure will force him to sit out the entire 2026 season.
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Diamondbacks' Jacob Amaya: Nets MiLB deal from Arizona
Rotowire
The Diamondbacks signed Amaya to a minor-league contract Dec. 4.
Amaya has a solid glove but has slashed a measly .147/.183/.161 across 154 plate appearances in the majors. He will give the Diamondbacks some infield depth at Triple-A Reno.
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Diamondbacks' Isaiah Campbell: Lands with Arizona on MiLB deal
Rotowire
The Diamondbacks signed Campbell to a minor-league contract Dec. 5.
In parts of three seasons in the majors, Campbell has collected a 5.65 ERA and 42:16 K:BB over 43 innings. The 28-year-old reliever will give the Diamondbacks some experienced bullpen depth at Triple-A Reno in 2026.
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Diamondbacks' Merrill Kelly: Back with Diamondbacks
Rotowire
Kelly agreed to a two-year, $40 million contract with the Diamondbacks on Sunday, Ken Rosenthal of The Athletic reports.
The 37-year-old right-hander was dealt by the Diamondbacks to the Rangers at the trade deadline in July, and he'll now return to the desert for an eighth season. Kelly should step back in as Arizona's ace after posting a 3.52 ERA, 1.11 WHIP and 167:48 K:BB across 184 innings last season.
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Diamondbacks' Bryce Jarvis: Scrubbed from 40-man roster
Rotowire
The Diamondbacks designated Jarvis for assignment Friday.
The transaction frees up a 40-man roster spot for Michael Soroka, whose signing was officially announced Friday. Jarvis has a 3.69 ERA over 105 innings at the major-league level, but that's come with an unappetizing 71:52 K:BB.
Diamondbacks' Michael Soroka: Nets one-year deal from Arizona
Rotowire
The Diamondbacks signed Soroka to a one-year contract Monday, Jesse Rogers of ESPN.com report.
The deal is worth $7.5 million, with $2 million more possible in incentives, per Nick Piecoro of The Arizona Republic. Soroka -- who will slot into the Arizona rotation -- flashed some encouraging signs in 2025, ultimately finishing with a 4.52 ERA, 1.13 WHIP and 95:29 K:BB over 89.2 regular-season innings covering 17 starts and five relief appearances between the Nationals and Cubs. He missed much of the second half with a shoulder injury but returned late in the season in a relief role. Soroka is a poor bet to hold up health-wise given that he hasn't reached 100 innings at the big-league level since 2019, but he has some upside and will only cost Arizona a one-year commitment.
Diamondbacks' Gerardo Carrillo: Nets NRI deal with Diamondbacks
Rotowire
The Diamondbacks signed Carrillo to a minor-league contract with an invitation to spring training Friday.
Carrillo missed the 2024 season while recovering from Tommy John surgery and spent most of 2025 at Double-A Frisco in the Rangers organization, holding a 3.69 ERA and 53:19 K:BB over 46.1 frames. The 27-year-old has never reached the majors and will likely begin the 2026 campaign at Triple-A Reno.
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Diamondbacks' Taylor Rashi: Back in Arizona as NRI
Rotowire
The Diamondbacks re-signed Rashi to a minor-league contract with an invitation to spring training Friday.
Arizona non-tendered Rashi last month, but he'll return to the organization. Slated to turn 30 in January, Rashi posted a 4.41 ERA and 22:8 K:BB across 16.1 innings with the Diamondbacks in 2025.
Diamondbacks' Tommy Henry: Back with Arizona on NRI deal
Rotowire
The Diamondbacks re-signed Henry (elbow) to a minor-league contract with an invitation to spring training Monday.
Henry was non-tendered by Arizona last month, but the two sides have reunited on a minor-league pact. The left-hander missed much of 2025 due to injury and could be out for all of next season following Tommy John surgery in June. Henry holds a career 5.07 ERA over 37 appearances (32 starts) at the big-league level.
According to sources, McCarthy or Alek Thomas will likely be traded during the offseason, Nick Piecoro of the Arizona Republic reports.
The Diamondbacks would experience a cost savings by moving one of these arbitration-eligible center fielders and using a younger player as the backup. McCarthy has been the more dangerous hitter, while Thomas is considered the better glove. Among the potential replacements are Blaze Alexander, Jorge Barrosa and Tim Tawa. Jordan Lawlar, who is blocked at shortstop by Geraldo Perdomo and didn't handle third base well during a September cameo in 2025, has played a handful of games in center field during winter ball and is also an option.
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Diamondbacks' Alek Thomas: Could be traded
Rotowire
According to sources, Thomas or Jake McCarthy will likely be traded during the offseason, Nick Piecoro of the Arizona Republic reports.
The Diamondbacks haven't determined which player will stay or go, but there are cost savings to be had. Thomas is considered the better defender while McCarthy has been more productive with a bat in hand, but neither has taken hold of the everyday job in center field. Potential replacements include Blaze Alexander, Jorge Barrosa and Tim Tawa. Jordan Lawlar, who has played a handful of games in center field during winter ball, is also an option.
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