In the 11th inning of their showdown with the Seattle Mariners on Monday night, the Arizona Diamondbacks snatched a clutch victory thanks to Josh Naylor's heroics at the plate.

After some early hiccups, the Diamondbacks played another quality all-around game, shutting out the Padres after the first inning for a victory.

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

With one big swing, Diamondbacks first baseman Josh Naylor saved the day for Arizona, which defeated the Mariners on Monday night.

A Boston Red Sox trade idea lands Arizona Diamondbacks slugging first baseman Josh Naylor after Rafael Devers refused to take over first base duties.

Arizona Diamondbacks' Josh Naylor discusses the moment he hit his walk-off grand slam to beat the Seattle Mariners on June 9, 2025.

Diamondbacks first baseman Josh Naylor delivered a walk-off grand slam in the 11th inning to avoid another potentially disastrous loss.

Josh Naylor conectó un grand slam para finalizar el juego en la undécima entrada y los Diamondbacks de Arizona vencieron el lunes por la noche 8-4 a