The Houston Astros defeated the Boston Red Sox 9-2 at Daikin Park on March 31, 2026, in a game that was never particularly close after the early innings. The DiamondIQ model opened with a 54 percent home win probability for Houston, and by the final out that estimate had climbed to 100 percent, reflecting how thoroughly the Astros controlled the contest. Boston finished with just four hits and committed two errors, while Houston collected 11 hits and played clean defense.
The decisive stretch came in the bottom of the third, when Christian Walker delivered a single off Brayan Bello that shifted Houston's win probability by plus-15.2 percent, the single largest swing of the game. Bello continued to struggle in the fifth, surrendering a Yordan Alvarez home run worth plus-8.7 percent and a Joey Loperfido single worth plus-5.6 percent as Houston scored three times in the inning to extend what was already a comfortable lead. Boston's most meaningful moment came in the top of the fifth, when Connor Wong doubled off Hunter Brown for a plus-9.6 percent swing, though a Ceddanne Rafaela strikeout later in the same half-inning erased much of that momentum, costing the Red Sox 3.7 percent in win probability.
Walker finished as the game's top offensive performer by DiamondIQ's measure, posting a plus-17.0 percent WPA and plus-1.3 RE24, while Alvarez led all players with a plus-2.5 RE24 and added plus-10.1 percent WPA. On the pitching side, Hunter Brown was the standout, accumulating plus-14.0 percent WPA in his outing, with Cody Bolton and Jovani Moran each finishing at 0.0 percent WPA in their appearances. The model leans toward Houston having been the clearly superior team on the night by every measurable dimension.
Analysis generated by DiamondIQ's model.