Alvarez hits 3-run homer in 9th, Astros jolt Mariners in Game 1

HOUSTON - Yordan Alvarez smashed a game-ending, 3-run homer with two outs in the ninth inning off Robbie Ray, wrecking Seattle's strategy of using a Cy Young Award winner in a rare relief role and vaulting the Houston Astros over the Mariners 8-7 Tuesday in their playoff opener.

Trailing all game after a poor start by Justin Verlander, the AL West champion Astros overtook rookie star Julio Rodríguez and the wild-card Mariners at the end to begin their best-of-five Division Series.

Houston was down 7-5 when rookie pinch-hitter David Hensley reached with one out in the ninth as Seattle closer Paul Sewald grazed his jersey with a pitch.

Sewald struck out Jose Altuve before Jeremy Peña laced a single to center field to chase Sewald.

Mariners manager Scott Servais then made the bold move to bring in Ray, who started Saturday at Toronto in the AL wild-card series, for a lefty vs. lefty matchup with Alvarez. Ray won the Cy Young last year with Toronto, had made only six relief appearances in his career and had never earned a pro save.

Alvarez, who hit 37 homers in the regular season, sent Ray's second pitch deep into the seats in right field to set off a wild celebration with his parents in the stands.

The Mariners jumped on Verlander for 6 runs in just 4 innings to build a 6-2 lead early. Yuli Gurriel hit a solo homer in the Houston fourth before Eugenio Suarez's solo shot in the seventh extended Seattle's lead to 7-3.

A 2-run homer by Alex Bregman off Andrés Muñoz cut the lead to 7-5 in the eighth inning to set up the dramatic finish.