HOUSTON (AP) -- Logan Morrison's tiebreaking two-run pinch-hit homer in the eighth inning lifted the Seattle Mariners to a 7-5 win over the Houston Astros on Tuesday night.
The game was tied 5-5 when Morrison hit the third pinch-hit homer of his career, sending a pitch from Pat Neshek (3-4) into the seats in right field.
Franklin Gutierrez hit a solo homer in the second and Mark Trumbo, who homered twice on Monday, added a two-run shot off the train beyond Houston's left-center field wall to give Seattle a 5-3 lead in the fifth.
Jose Altuve hit an RBI single with two outs in the sixth to get Houston within 1. The Astros tied it up when Jake Marisnick scored from third on an error by catcher John Hicks when he tried to pick off Altuve at second base.
Logan Kensing (1-0) pitched a scoreless seventh for the win and Tom Wilhelmsen threw a perfect ninth for his seventh save.
Houston starter Scott Feldman left the game with right shoulder discomfort after walking five and giving up three hits and three runs in 2 2-3 innings.
Marisnick had a solo shot in the fourth for the Astros, who remain in first place in the AL West.
Mariners starter Roenis Elias allowed five hits and four runs with four walks in 5 1-3 innings.
Gutierrez led off the second with his 11th homer to put Seattle up 1-0. Seth Smith followed with a triple before the Mariners added another run after Feldman walked three consecutive batters with two outs in the inning.
Max Stassi cut the lead to 2-1 with a two-out RBI single in the second inning.
Feldman walked two straight batters before grimacing after a pitch to Trumbo that resulted in a fly out for the second out of the third inning. Trainers visited with him briefly on the mound before he left the game and was replaced by Vince Velasquez.
Velasquez quickly allowed a single by Brad Miller that made it 3-1.
Houston got within 3-2 on a sacrifice fly by Carlos Gomez in the third, and Marisnick's homer tied it in the fourth.
Carlos Correa snagged Robinson Cano's line drive with a diving effort for the first out of the fifth. Trumbo's 20th homer came with two outs in the inning.
Astros: OF George Springer (broken right wrist) will play two more games of a rehabilitation assignment in Double-A Corpus Christi before the Astros decide what's next for him. ... Reliever Tony Sipp has been bothered by an unspecified back injury for about a week and won't be available in this series.
Seattle's Taijuan Walker (10-7, 4.53) opposes Scott Kazmir (7-9, 2.45) when the series wraps up on Wednesday. Walker is 3-0 with a 3.12 ERA in his last six starts, which included a one-hitter against Minnesota on July 31.