Giants' rough defensive inning paves way for loss to Diamondbacks

Justice delos Santos, Bay Area News Group on May 25, 2026

Published in Baseball

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SAN FRANCISCO — If the Giants are going to have any shot at being competitive, they’re going to need to find a way to beat the Arizona Diamondbacks.

Fresh off a series victory against the Chicago White Sox, San Francisco dropped a fourth straight game to Arizona with a 6-2 loss on Memorial Day at Oracle Park.

The straits turned on the Giants during the top of the fifth inning, paving the way for the Diamondbacks to take a lead they’d never lose.

Shortstop Willy Adames gifted Arizona a free rally to start the inning by airmailing a routine throw to first base that landed in the Diamondbacks’ dugout. Adames’ error allowed Arizona’s Tommy Troy to reach second for the top of the order.

The Diamondbacks received another gift from the Giants’ defense, this one courtesy of left fielder Casey Schmitt. Following Adames’ error, Ketel Marte lifted a fly ball to left field. Schmitt, making his fifth career start in left field, gave chase but found himself in a gray area.

Schmitt charged hard to try to catch the ball on the fly, but he pulled up at the last second to try to corral the ball on the hop and keep Troy at third. That decision put him in an awkward position. The ball rolled past Schmitt after it fell right in front of him, forcing Schmitt to reverse course. Troy scored easily, and Marte had a double.

Adames and Schmitt’s mistakes paved the way for the Diamondbacks to score three runs, turning the Giants’ 2-1 lead into a 4-2 deficit, and contributed to an early exit for starter Landen Roupp. The right-hander struck out seven batters over five innings but allowed four runs (two earned).

Arizona added two more in the top of the sixth on a two-run single by Marte, who hit a walk-off homer against the Giants last week.

First baseman Rafael Devers stayed hot offensively, driving in two runs in the bottom of the fourth with a double.

Up next

Right-hander Tyler Mahle, who has a 6.10 ERA over 10 starts as a Giant, will get another crack at the Diamondbacks after allowing six earned runs over five innings last week. Right-hander Trevor McDonald will start on Wednesday for the series finale.

Manager Tony Vitello said there’s a good chance that ace Logan Webb makes his return from the 15-day injured list during the Giants’ upcoming series against the Rockies in Colorado, but nothing has been decided.