The game turned in the fourth inning when Boston exploded for four runs to transform a 3-1 deficit into a commanding lead. The Red Sox defeated the Cardinals 9-3 at Busch Stadium, extending their winning streak to two games.
Willson Contreras carried the Boston offense with a 4-for-5 performance that included a home run and four RBIs. His first-inning homer to center field gave the Red Sox an early 2-0 lead, and he added an RBI single in the decisive fourth. Trevor Story matched Contreras with four hits, including the ninth-inning double that provided the final margin.
The fourth inning broke the game open when Jarren Duran doubled to center, scoring three runners to push Boston ahead 6-1. Contreras followed with his RBI single to extend the lead to 7-1. The Cardinals had briefly answered Boston's early lead when Jordan Walker homered to left center in the second inning, but they could not match the Red Sox offensive surge.
Brayan Bello earned the victory with 6.2 innings of work, allowing six hits and two earned runs while carrying a 6.14 ERA. Andre Pallante absorbed the loss for St. Louis, surrendering 10 hits and seven runs over five innings with a 5.40 ERA. The Cardinals managed solo home runs from Walker and Alec Burleson, but could not generate sustained offense against Boston's pitching.
Boston improved to 6-9 with the victory, while St. Louis fell to 8-7 and extended their losing streak to two games.