San Francisco Giants at Arizona Diamondbacks: Final Score & Recap

The Arizona Diamondbacks handled the San Francisco Giants 8-2 at Chase Field on June 30, 2026, a result that tracked closely with the DiamondIQ model's pre-game estimate of a 63 percent home win probability and ultimately climbed to 100 percent by the final out. Arizona struck early and often, scoring three runs in the first inning and three more in the third to put the game well out of reach, leaving San Francisco with just four hits on the night against a dominant Diamondbacks pitching staff.

The game's most consequential sequence came in the bottom of the first, when Lourdes Gurriel Jr. connected on a home run off Landen Roupp that shifted win probability 5.9 percent in Arizona's favor right out of the gate. Roupp continued to struggle in the third inning, where a Ketel Marte single added another 6.7 percent swing and a Jorge Barrosa walk contributed 6.2 percent, compounding the damage as Arizona's offense methodically extended its lead. San Francisco's best opportunity to slow the bleeding came in the top of the second, but a Matt Chapman groundout off Brandon Pfaadt cost the Giants 5.0 percent in win probability and ended any realistic threat before it could develop.

Brandon Pfaadt was the story on the mound, posting a game-high 10.8 percent WPA as the anchor of Arizona's pitching effort, with Ryan Thompson and Taylor Clarke adding modest contributions in relief. Among Arizona's position players, Ketel Marte and Nolan Arenado each finished with a WPA of plus-6.2 percent, while Barrosa contributed plus-4.9 percent to round out a well-distributed offensive performance. The Giants, held to two runs across nine innings, had no answer for a Diamondbacks club that controlled the game from the opening frame.