The Boston Red Sox silenced Busch Stadium on April 11, 2026, defeating the St. Louis Cardinals 7-1 in a game that was far closer on paper through seven innings than the final score suggests. The DiamondIQ model entered the night with a 54% home win probability for St. Louis, but that figure collapsed to 0% by game's end as Boston broke the game open with a five-run ninth inning after plating two in the fourth. Ranger Suarez was the central figure in keeping the Cardinals at bay, generating the highest single-pitcher win-probability contribution of the night at plus-31.9%, a performance that set the foundation for everything that followed.
The game's decisive sequence was split between two separate moments. In the top of the fourth, Willson Contreras delivered a double off Cardinals starter Kyle Leahy that shifted win probability by plus-17.8 percentage points, the largest single play swing of the night, giving Boston an early two-run advantage. St. Louis threatened briefly in the bottom of the eighth when Jordan Walker connected on a home run off Garrett Whitlock for a plus-17.3% swing, briefly narrowing the gap to 2-1 and injecting life into the home crowd. However, Whitlock answered by striking out Nolan Gorman moments later, erasing 12.9 percentage points of Cardinals hope in a single at-bat, and the threat dissolved entirely. Danny Coulombe contributed a plus-8.8% pitching performance of his own, aided in part by Yohel Pozo's flyout in the seventh that cost St. Louis 8.8 points of win probability.
On the offensive ledger, Contreras finished as the top batter by WPA at plus-17.0% with a RE24 of plus-2.7, the most impactful run-environment contribution among position players. Jordan Walker's home run gave him a plus-14.1% WPA for the Cardinals despite the loss, while Marcelo Mayer added a quiet but meaningful plus-7.4% for Boston. Justin Bruihl rounded out a strong bullpen performance behind Suarez with a plus-12.4% WPA contribution. The model's estimate never recovered for St. Louis after the ninth-inning eruption, and Boston left Missouri with a decisive road victory.
Analysis generated by DiamondIQ's model.