Arizona Diamondbacks Offseason Review

Diamondbacks third baseman Nolan Arenado (28) hits a fly ball against the Brewers during a spring training game at Salt River Fields on March 20, 2026. | Patrick Breen/The Republic / USA TODAY NETWORK via Imagn Images Introduction In previous weeks we looked at the offseason moves of the Colorado Rockies , Los Angeles Dodgers , San Diego Padres , and the San Francisco Giants . Today we’ll wrap up our tour of the NL West with a review of the Arizona Diamondbacks offseason, along with my predictions for the 2026 season.

2025 Season Overview/Recap The D-backs 2025 season was a disaster, largely as a result of the pitching staff being decimated by injuries. The biggest acquisition of the 2025 offseason, Corbin Burnes, who signed a 6 year $210 million contract, had his season end early when he hit the injury list in early June with an elbow injury that required Tommy John surgery. He wasn’t even the only pitcher who needed their elbow surgically repaired, as young flame-throwing reliever Justin Martinez would also go under the knife for Tommy John surgery, along with AJ Puk who needed internal brace surgery on top of having a flexor strain that initially put him on the injured list.

Before being traded to the Rangers, starter Merrill Kelly would also spend time on the IL with a back injury. The D-backs were well on their way to a losing record by the trade deadline, so GM Mike Hazen shipped out almost all of the pending free agents aside from Zac Gallen, trading away the aforementioned Merrill Kelly, first baseman Josh Naylor, third baseman Eugenio Suarez, and outfielder Randall Grichuk. The D-backs then proceeded to go on a winning streak that allowed them to stay in the mix for the last Wild Card seed up until mid September, though the N.

Y. Mets were in the middle of their annual late season collapse, per tradition. The Diamondbacks ultimately finished in fourth place with an 80-82 record.