Yainer Diaz homered in a second straight game to lead the Houston Astros to an 8-5 win over the St. Louis Cardinals on Tuesday night.

Playing without star right fielder Kyle Tucker, the Astros got a three-run homer from Diaz in the third inning as they took the first two games of a three-game set with the Cardinals. Diaz hit a go-ahead two-run homer in Monday’s 7-4 win.

Tucker, who left Monday’s game after hitting a foul ball off his right shin, was diagnosed with a contusion and sat out Tuesday night. He is tied for second in the majors with 19 homers.

Houston scored six runs off Cardinals starter Andre Pallante (1-2). He allowed six hits and walked three in three innings.

Astros starter Spencer Arrighetti allowed three hits and one run in three innings. He was evaluated by trainers in the second after he was struck in the left leg by a 103.8 mph comebacker. He threw 64 pitches and left the game after the third with a left calf contusion.

Astros reliever Tayler Scott (2-2) allowed three hits and one run in two innings. Ryan Pressly pitched a scoreless ninth for his first save of the season.

The Cardinals cut into Houston’s lead with solo homers from Masyn Winn in the sixth inning and Nolan Gorman in the seventh. Gorman’s homer appeared to graze off the glove of a leaping Mauricio Dubón after a fan bumped into the Astros right fielder.

Alec Burleson homered for St. Louis in the first.

The Astros improved to 3-1 in June but remain six games under .500 (28-34). The Cardinals fell to 3-5 on a nine-game trip that wraps up Wednesday.

RHP Miles Mikolas (3-6, 5.54 ERA) will start the series finale for the Cardinals on Wednesday. Astros RHP Ronel Blanco (5-1, 2.44) will try to bounce back from his first loss of the season in his last outing, against Minnesota.