CINCINNATI — Rookie Tyler Stephenson hit a tiebreaking two-run homer in the seventh inning, lifting the Cincinnati Reds to a 3-1 victory over the Pittsburgh Pirates in the opener of a doubleheader on Monday.

Mike Moustakas hit a go-ahead three-run homer in the fifth inning of the nightcap as the Reds swept the twinbill, 9-4.

The 24-year-old Stephenson lifted his batting helmet off his head with his left hand and pumped both arms in the air before being swarmed by teammates at the plate in Game 1.

Trevor Bauer and Cincinnati carried a 1-0 lead into the seventh, but Colin Moran led off with his eighth homer. Bauer had retired 14 consecutive batters before Moran’s towering fly ball into the seats in right.

Rookie Ke’Bryan Hayes homered for the Pirates in the second game. Pittsburgh (14-32) has dropped six straight games.

Bauer was trying for his third seven-inning shutout of the pandemic-shortened season.