Pete Alonso goes 4-for-4 as Orioles burst for eight in the fifth at St. Louis

The Orioles arrived at Busch Stadium with a problem, and they solved it quickly. In a park that Statcast has measured with a calculated factor of 97 this season, tied for the third-lowest in Major League Baseball, Baltimore still managed to pile on runs against the Cardinals. The outcome was a 13-1 win that was shaped decisively by one inning, as the Orioles scored eight times in the fifth, their biggest inning of the season.

Baltimore had not played in St. Louis since May 22, 2024, and the game took on the feel of a long overdue homecoming for the offense. They got moving early enough to set the table, then seized control in the middle frames. The fifth inning was the separation point, and once it started to tilt, it never came back toward the Cardinals.

At the center of the burst was Pete Alonso, who delivered an offensive performance that stacked one base hit after another in a short span. Alonso went 4-for-4, including a home run and a double, driving in four runs and scoring twice before exiting in the fifth inning with the Orioles already in command.

Alonso’s efficiency mattered not only because he reached base consistently, but because the Orioles used his at-bats as part of a larger sequence. The release describes his output as occurring before he left after the fifth, and the team’s biggest-inning-of-the-year production came in that same frame. In other words, his power and run production aligned with the moment Baltimore flipped the game from competitive to lopsided.

For the Cardinals, the problem was less about one bad pitch and more about the environment and execution converging against them. A park factor near 97 is an indicator of lower run production, and Busch Stadium has been one of the more difficult places for hitters across the league in 2026. Yet Baltimore’s fifth inning overrode those conditions, putting pressure on every follow-up at-bat for St. Louis.

The result also set a clear benchmark for what the Orioles can do when multiple parts of their lineup click in a setting that typically suppresses scoring. An eight-run inning is the type of outburst that can change the rhythm of a series and create separation in the late months, particularly when a team is facing an opponent in a place where offense is normally scarce.

Looking ahead, the immediate watch point is whether Baltimore’s offensive surge can be carried into its next games, or whether Busch Stadium’s baseline toughness reasserts itself on future roads. Alonso’s four-hit night stands as a reminder that the Orioles have a path to big innings when a single hitter’s power and precision arrive together, and then the lineup follows through.