PHOENIX — There has been no season in the history of the Arizona Diamondbacks in which the club had used more pitchers than it has in 2025.
Philip Abner made his major league debut on Friday, giving the Diamondbacks 41 pitchers used this season, matching the 2021 squad for the club record. On Sunday, the D-backs selected prospect Austin Pope from Triple-A Reno, and on Thursday he became the 42nd.
Unrelenting injuries are the main cause, and those prematurely ended the seasons of ace Corbin Burnes, co-closers A.J. Puk and Justin Martinez and reliever Kevin Ginkel.
They have created a kaleidoscopic pitching staff, particularly in the bullpen.
By the numbers: Diamondbacks break team record for pitchers used in a season
D-backs use 42 pitchers in a season
Ready for the list? Okay, here we go:
Philip Abner, Kyle Backhus, Jalen Beeks, Jeff Brigham, Juan Burgos, Corbin Burnes, José Castillo, Nabil Crismatt, John Curtiss, Anthony DeSclafani, Yilber Díaz, J.P. Feyereisen, Zac Gallen, Brandyn Garcia, Kevin Ginkel, Kendall Graveman, Tommy Henry, José Herrera, Andrew Hoffmann, Drey Jameson, Bryce Jarvis, Merrill Kelly, Casey Kelly, Joe Mantiply, Justin Martínez, Scott McGough, Cristian Mena, Shelby Miller, Christian Montes De Oca, Juan Morillo, Ryne Nelson, Kyle Nelson, Brandon Pfaadt, Austin Pope, A.J. Puk, Taylor Rashi, Trevor Richards, Eduardo Rodríguez, Andrew Saalfrank, Tayler Scott, Ryan Thompson and Jake Woodford.
Of the 41, nine started games this year and a team-record 37 made appearances out of the bullpen. Seventeen pitchers have recorded saves, the most in a single season in MLB history (previously 14).
“It’s nothing you can predict when you’re sitting in spring training, and it’s just where we’re at right now,” manager Torey Lovullo said. “I can’t explain how or why it happened. I know the ’21 year was a lot different. We had to dip into our reserves and then we went external and started to pick guys up on waivers.
“We’ve been dipping into our system and there’s been a bunch of guys that have come up and really opened our eyes. Guys like Backhus, Saalfrank coming back, Abner. We’ve taken on an enormous amount of injury, and the group that has come in here has held serve.”
Gallen is the team leader in innings at 187.2, while Beeks easily paces the club in appearances with 61.
19 injuries
Fangraphs’ injury report lists 17 major league pitching injured list stints for the Diamondbacks, which does not include traded players Jordan Montgomery and Miller. Arizona pitchers have undergone six season-ending Tommy John surgeries: Blake Walston, Montgomery, Puk, Martinez, Burnes and Henry.
Injuries tell a significant portion of the story for the 2025 Diamondbacks, which has led to the team bringing up prospects and trying out journeyman veterans to see who sticks. Crismatt did, Feyereisen not so much.
The D-backs have used eight pitchers in their age 25 seasons or younger this year. Nine made their major league debuts this year.
Speaking of injuries, Lovullo said Walston — who has not thrown a pitch this season after getting Tommy John surgery in spring training — has began his throwing program. He is the first among Arizona’s pitchers who had TJ to pick up a ball.
Lovullo said the order is likely going to be Walston, Puk, Burnes, Martinez and Henry.
Third in MLB
Amazingly, the New York Mets (46) and Atlanta Braves (45) have both used more arms this season than the Diamondbacks. The last-place Los Angeles Angels and Baltimore Orioles were tied with the D-backs with 41 before Pope’s debut.
New York’s 46 pitchers used is a major league record.
Recent trend
The Diamondbacks’ top five seasons in terms of pitchers uses are the last five seasons (2021-25).
The fewest Arizona has used in a full season was 17 back in 2000. The 2025 Diamondbacks used 17 pitchers before the end of April.
Why stop at pitchers? How about first basemen?
As Arizona Sports’ John Gambadoro pointed out, “The amount of players that the Diamondbacks have used at first base this year is mind boggling.”
Arizona has used eight first basemen this season, which ties a club record.
The D-backs replaced Christian Walker with Josh Naylor this season via trade with Cleveland. Naylor played 93 games before getting traded to Seattle, opening the door for rookie and trade acquisition Tyler Locklear along with Pavin Smith to platoon. Smith suffered a quad injury that ended his season, and Locklear has since endured a season-ending shoulder/elbow injury.
The eight first basemen are:
Tristin English, Tyler Locklear, James McCann, Josh Naylor, Pavin Smith, Eugenio Suárez, Tim Tawa and Ildemaro Vargas.
Vargas and Tawa are the acting first basemen even though they are utility players with much more experience in other spots.
“The footwork around first base is something that is not an innate quality,” Lovullo said. “You have to learn it. … You just gotta learn where you are, how to shift your feet, how to stretch the right way, how to pick the baseball. So everything around the bag is experience, and you just gotta log innings.”
Arizona also used eight first basemen in 2015, 2009 and 2008.
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