Chicago Cubs at San Francisco Giants: Final Score & Recap

The Chicago Cubs handed the San Francisco Giants a 3-2 defeat at Oracle Park on June 9, 2023, overcoming a pre-game DiamondIQ model estimate that gave the home side a 62 percent chance of winning. The game remained scoreless through six innings before a pivotal seventh inning that effectively decided the outcome. Nico Hoerner delivered a single off Ryan Walker that swung win probability by 17.3 percent in Chicago's favor, helping the Cubs plate three runs in the frame. San Francisco answered with one of its own in the bottom half, as Joc Pederson singled off Mark Leiter Jr. to push the Giants' chances back up by 13.3 percent, but it was not enough to close the gap Chicago had opened.

The Cubs' bullpen then did the critical work of preserving the lead. Mark Leiter Jr. was particularly effective, neutralizing a potential Giants rally in the eighth when Blake Sabol lined out, a play that shifted win probability 12.9 percent against San Francisco. Adbert Alzolay closed the door in the ninth, striking out Brandon Crawford to end the game, a moment that represented a 31.6 percent win-probability swing and left the Giants with no path to recovery. The Giants had taken an early foothold in the third when Thairo Estrada doubled off Marcus Stroman for a 10.3 percent swing, but the lone run it produced proved insufficient.

Among individual performers, Brandon Crawford finished with the highest total WPA at plus-34.8 percent, though that figure was driven largely by the leverage of his final at-bat ending in the game's decisive strikeout. Hoerner contributed plus-19.6 percent WPA with a plus-1.5 RE24, reflecting genuine run-context value from his seventh-inning single. On the pitching side, Marcus Stroman led all pitchers with plus-22.3 percent WPA despite surrendering the early run, and Tristan Beck added plus-15.4 percent WPA in relief as Chicago's staff collectively outperformed the Giants' 62 percent pre-game advantage.