Diamondbacks Beat Mariners 8-4 on Naylor Walk-Off Grand Slam in 11th

Tuesday, June 10th, 2025

PHOENIX -- Josh Naylor hit a game-ending grand slam in the 11th inning and the Arizona Diamondbacks beat the Seattle Mariners 8-4 on Monday night after losing closer Justin Martinez with two outs in the ninth and then blowing a four-run lead.

Corbin Carroll launched a leadoff homer and Naylor had three hits and five RBI for the Diamondbacks, who stopped a three-game skid.

Dramatic Ninth Inning and Injury

Martinez entered to start the ninth with Arizona leading 4-0 and struck out Jorge Polanco and Randy Arozarena to begin the inning. The right-hander then called for an athletic trainer after throwing a pitch to Dylan Moore and exited with right elbow tightness, the Diamondbacks announced later.

Jeff Brigham replaced Martinez and gave up RBI singles to Donovan Solano and Cole Young before Dominic Canzone tied it with a 450-foot, two-run drive to right field for his first major league homer this season.

Acquired from Arizona at the 2023 trade deadline, Canzone was called up from Triple-A Tacoma earlier in the day and entered as a pinch hitter in the seventh.

Extra-Inning Finish

Juan Morillo retired slugger Cal Raleigh with two runners aboard to finally end the ninth inning. Morillo then pitched a perfect 10th and Jalen Beeks (2-0) got three straight outs in the 11th.

Naylor homered to right-center with one out on a 1-2 pitch from Carlos Vargas (1-5), who was working his second inning in relief. Vargas loaded the bases with a walk to Geraldo Perdomo that followed an intentional walk to Ketel Marte, setting the stage for the walk-off grand slam.

Early Pitching and Offense

Carroll, a Seattle native, hit his 19th home run on the first pitch from Mariners starter Emerson Hancock.

Merrill Kelly threw six shutout innings for the Diamondbacks, building the initial four-run lead.

Key Moments and Stats

Carroll made a sliding catch in the 11th on Solano's leadoff blooper down the right-field line to keep Moore on second base, a crucial defensive play in extra innings.

Seattle (33-32) has lost 11 of 15 games.

Up Next

Mariners RHP Bryan Woo (5-3, 3.07 ERA) starts Tuesday against Diamondbacks RHP Brandon Pfaadt (7-4, 5.51).

In summary

The Arizona Diamondbacks defeated the Seattle Mariners 8-4 in 11 innings on June 9, 2025, secured by a walk-off grand slam from Josh Naylor. The game saw the Diamondbacks lose closer Justin Martinez to injury in the ninth, leading to the Mariners staging a dramatic four-run comeback to tie the game on a home run by Dominic Canzone. Despite the blown lead, Arizona's pitching held through extra innings before Naylor's decisive hit. Key contributors included Corbin Carroll with an early homer and Merrill Kelly with a strong start for Arizona, while Canzone's tying blast highlighted Seattle's rally. This win ended a three-game skid for the Diamondbacks. The series is set to continue on Tuesday.

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