PHOENIX (Interstat) — Nolan Arenado hit a grand slam in the first inning and Gabriel Moreno homered and drove in three runs as the Arizona Diamondbacks routed the San Francisco Giants 12-2 on Monday, May 18, 2026, at Chase Field. Attendance was 20,072 with a game time of 2:26.

Arizona scored four in the first, one in the second, two in the third and five in the fifth. San Francisco scored single runs in the second and third. The Diamondbacks finished with 16 hits to eight for the Giants.

Arenado’s grand slam, his seventh of the season, scored Ketel Marte, Corbin Carroll and Geraldo Perdomo. Moreno homered in the fifth with Ildemaro Vargas aboard. Ryan Waldschmidt doubled in a run, and Marte added an RBI single later in the inning. An error by shortstop Willy Adames allowed another run.

Zac Gallen (2-4) earned the win. Robbie Ray (3-6) took the loss. Arizona improved to 23-23; San Francisco dropped to 20-28.