MLB Recap · May 18, 2026

San Francisco Giants at Arizona Diamondbacks: Final Score & Recap

SF2
Final
AZ12

Line Score

Team123456789RHE
SF011000000283
AZ41205000-12160

The Story

The Arizona Diamondbacks routed the San Francisco Giants 12-2 at Chase Field on May 18, 2026, a result that was largely decided by the third inning. The DiamondIQ model entered the game with Arizona favored at 62% and closed at 100%, reflecting how completely the Diamondbacks controlled the contest. Arizona struck early and often, scoring four runs in the first inning and adding two more in the third to push the game well out of reach before San Francisco could mount any sustained resistance. The Giants finished with three errors against zero for Arizona, compounding the damage from a 16-hit Diamondbacks attack.

The win-probability swings identified by the DiamondIQ model told the story of how the game was constructed inning by inning. Jose Fernandez's groundout in the bottom of the first added 5.4% to Arizona's win probability off Robbie Ray, reflecting how the early rally set the tone. Tim Tawa's single in the bottom of the third was the single largest play of the game at plus 5.9% WPA, pushing the win probability further toward certainty as Arizona extended its lead to six runs. On the San Francisco side, Harrison Bader's double off Zac Gallen in the top of the third was the Giants' most meaningful play at plus 4.5% WPA, and Bryce Eldridge's strikeout in the second inning was the most damaging moment for San Francisco at minus 5.3%, highlighting how the Giants repeatedly failed to capitalize when opportunities existed.

Nolan Arenado led all players with a plus 8.5% WPA and a plus 2.7 RE24, making him the most impactful offensive performer of the night by the DiamondIQ model's estimate. Fernandez and Tawa followed at plus 6.3% and plus 5.1% WPA respectively. On the mound, Zac Gallen was Arizona's most valuable contributor at plus 4.1% WPA, limiting the Giants to a manageable two runs on eight hits while the offense built an insurmountable cushion. The Giants' pitching staff, led by a struggling Robbie Ray, had no answer for an Arizona lineup that posted 16 hits and a clean defensive game to complete a dominant performance.

Analysis generated by DiamondIQ's model.

Win Probability

755025SF bats firstFinalAZ win %SF win %
DiamondIQ model home win probability across the game (pre-game 62.2% → final 100%).

Biggest Plays by Win-Probability Added

Tim Tawa Single
Bot 3rd · off Robbie Ray
+5.9%
Jose Fernandez Groundout
Bot 1st · off Robbie Ray
+5.4%
Bryce Eldridge Strikeout
Top 2nd · off Zac Gallen
-5.3%
Harrison Bader Double
Top 3rd · off Zac Gallen
+4.5%
Nolan Arenado Strikeout
Bot 2nd · off Robbie Ray
+4.5%

Top Batters by WPA

Nolan Arenado+8.5%+2.7 RE24
Jose Fernandez+6.3%+0.4 RE24
Tim Tawa+5.1%+0.6 RE24

Top Pitchers by WPA

Full box score, pitch data, and the play-by-play timeline
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