November 5, 2026
November 5, 2026
Arizona Diamondbacks 2025 Season
The Diamondbacks’ 2025 season was built to end in October and instead ended on a September night in San Diego. Arizona spent the winter like a contender, losing its ace and much of its bullpen by summer. The front office sold off veterans at the deadline. Then a stripped-down roster clawed its way back into the Wild Card race anyway. Torey Lovullo’s club finished 80-82, fourth in the National League West and three games short of a playoff berth. The record reads like a disappointment. The story behind it says far more about the franchise’s core and its future.
Arizona entered the offseason determined to close the gap on the Los Angeles Dodgers. On December 30, the club signed right-hander Corbin Burnes to a six-year, $210 million contract. It was the boldest free-agent move in franchise history and a clear signal that the window was open. Burnes joined Zac Gallen, Merrill Kelly, Brandon Pfaadt and Eduardo Rodriguez in a rotation that looked deep on paper.
The front office also locked in its foundation. Ketel Marte signed a six-year extension worth $116.5 million. Pfaadt and reliever Justin Martinez received five-year deals, and shortstop Geraldo Perdomo agreed to a four-year, $45 million extension in February. Those commitments told the clubhouse exactly who would anchor this era.
The roster also lost familiar faces. Christian Walker, Joc Pederson, Paul Sewald and Josh Bell all departed in free agency. To replace Walker at first base, Arizona acquired Josh Naylor from Cleveland in December, sending right-hander Slade Cecconi the other way. Naylor brought a contact-first left-handed bat to a lineup that already featured Marte, Corbin Carroll and Eugenio Suárez. Expectations were simple. This team was supposed to push for a division title.
Torey Lovullo, entering his ninth season in the dugout, had steered this core to the 2023 World Series. He knew the stakes better than anyone. A strong lineup and a rebuilt rotation gave him the deepest roster of his tenure. The Dodgers and Padres, however, had spent just as aggressively, turning the division into a gauntlet before the first pitch.
Suárez delivered the defining individual moment of the spring. On April 26 against the Atlanta Braves, he hit four home runs in a single game. He became just the 19th player in major league history to do it. Arizona still lost 8-7 in ten innings, a cruel footnote to a historic night.
The club stood at 16-14 through April, close enough to believe. May then unraveled at 11-17, dropping Arizona from four games back to nine. The Diamondbacks needed a jolt, and on June 5 against Atlanta they found one. Trailing 10-4 entering the ninth, their win probability had sunk to 0.1 percent. The rally built slowly, then all at once. Suárez lined a two-run double off closer Raisel Iglesias to seize the lead, and Shelby Miller held on for an 11-10 win. It stands as the greatest comeback in franchise history.
The comeback could not mask what was breaking underneath. Burnes went down after just 11 starts and needed Tommy John surgery in June. Martinez and left-hander A.J. Puk underwent the same procedure that month. In a matter of weeks, Arizona lost its new ace and two of its most important relievers. A pitching staff already short on depth never recovered. The bullpen finished with a 4.82 ERA, ranked 27th in the majors. That collapse, more than any slump at the plate, decided the season.
Lovullo spent the summer patching holes with whatever arms were healthy. Ryne Nelson moved into the rotation, and journeyman Nabil Crismatt absorbed starts. Late-inning roles rotated almost weekly. Arizona set a major league record when 15 different pitchers recorded a save, a strange mark that reflected the chaos rather than celebrated it. Every blown lead in June and July pushed the club closer to a decision no one in the organization wanted to make.
General manager Mike Hazen faced a painful choice in late July, and he chose the future. Suárez went to Seattle with 36 home runs and 87 RBI already on his ledger. Naylor followed him to the Mariners after hitting .292 in Arizona. Kelly, carrying a 3.22 ERA, was dealt to Texas for three prospects. Miller, owner of a 1.98 ERA and 10 saves, left for Milwaukee. Hazen had hoped to remain a buyer, but the standings forced his hand. The returns, including Tyler Locklear and Brandyn Garcia, contributed little in the short term.
No one expected what came next. From August 1 into mid-September, the depleted Diamondbacks went 26-18. Their offense ranked among the top five in baseball in runs during that stretch. Perdomo, Carroll and catcher Gabriel Moreno each hit above .280 over that span, and Blaze Alexander added seven home runs. Gallen rediscovered his changeup and posted a 2.68 ERA across nine starts.
The turn came at Dodger Stadium. On August 29, Gallen blanked Los Angeles 3-0 with eight strikeouts, and Arizona took the series the next night. The win pulled the club to 5½ games back of the final Wild Card spot with 25 games left. By September 19, that gap had shrunk to two games behind the New York Mets. CBS Sports broke down how the sellers had become contenders again.
The finish proved brutal. Arizona beat the Dodgers 5-4 on September 23 to stay alive. Then the wins stopped. A loss at San Diego on September 26 eliminated the Diamondbacks, part of a five-game skid to close the year. The Cincinnati Reds claimed the last spot at 83-79.
The Diamondbacks’ 2025 season belonged to Geraldo Perdomo more than anyone. The shortstop played 161 games and hit .290 with 20 home runs, 27 stolen bases and a .389 on-base percentage. He walked more often than he struck out. His 7.1 fWAR ranked fifth in the majors, behind only Shohei Ohtani, Bobby Witt Jr., Cal Raleigh and Aaron Judge. In the final game, he reached 100 RBI on a ninth-inning grounder, greeted by teammates who mobbed him in the dugout. That moment captured what he had become, the heartbeat of the lineup. He earned a Silver Slugger Award at shortstop.
Carroll answered a difficult 2024 with the best season of his career. He set personal highs with 31 home runs and 84 RBI while stealing 32 bases. His 17 triples led the majors, and he led all qualified right fielders in Outs Above Average. Marte, despite missing time, hit .283 with 28 home runs and 72 RBI. Carroll and Marte joined Suárez as All-Stars, and both added Silver Slugger Awards.
The rotation offered less to celebrate. Gallen went 13-15 with a 4.83 ERA over 192 innings before heading into free agency. Pfaadt won 13 games but carried a 5.25 ERA. The gap between that staff and the lineup told the season’s story in two numbers.
Arizona finished with a plus-six run differential, a figure that undersold how competitive the club became after July. The Diamondbacks’ 2025 season exposed a pitching staff that needs rebuilding. It also confirmed that Perdomo, Carroll and Marte form a core worth building around. The full season statistics show a lineup that ranked near the top of the sport.
For a fan base that watched this group reach the World Series two years earlier, the finish stung. It also offered something sturdier than hope. The Diamondbacks’ 2025 season proved that even a sold-off roster could punch back against the best teams in the league. The franchise entered the winter with one clear lesson from that late charge. Health on the mound, not talent at the plate, stands between Arizona and October.
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