Colton Cowser, one of the Baltimore Orioles’ top prospects, had a night to remember as he blasted the first two home runs of his major league career, including a go-ahead three-run shot in the 10th inning, to lead his team to a 9-4 victory over the Boston Red Sox on Thursday. The win completed a three-game sweep for the Orioles over their AL East rivals.

The 10th inning was a wild affair, with Gunnar Henderson opening the scoring with a two-run homer off Isaiah Campbell (0-1), scoring the automatic runner Jackson Holliday, baseball’s top-rated prospect who made his debut the previous night.

Cowser, who struggled during a brief stint in the majors last season, delivered the decisive blow with his three-run blast, capping off a series in which he drove in an impressive 10 runs.

The Orioles had to battle back after falling behind 2-0 early on. Their comeback was aided by some sloppy defense from the Red Sox in the eighth inning. With Holliday on base due to an error, the Orioles challenged a call on a potential double play, and upon review, Holliday was ruled safe at second base.

Anthony Santander then delivered a clutch two-run homer, giving the Orioles a 3-2 lead. However, the Red Sox tied the game in the bottom of the eighth on a pinch-hit homer by Connor Wong over the Green Monster.

In the end, it was the Orioles’ young stars who shone brightest, with Cowser’s heroics and Holliday scoring two runs, even though he went 0-for-4 in his second major league game.

Grayson Rodriguez, the Orioles’ starter, had a solid outing, pitching 5 2/3 innings and allowing just two runs in the first inning. Craig Kimbrel (2-0) picked up the win with a scoreless ninth inning.

With this sweep, the Orioles continue to make a statement in the competitive AL East, led by their talented crop of young players who are quickly making their mark on the big league stage.