SEATTLE -- Edinson Volquez pitched into the eighth inning and Jedd Gyorko and Alexi Amarista each homered, and the San Diego Padres beat the Seattle Mariners 6-2 on Tuesday.
The teams split the brief two-game set in Seattle, but will be right back at it on Wednesday in San Diego for two more games as the "natural rivals" conclude their season series.
Gyorko hit a two-run shot in the fourth inning off Seattle starter Brandon Maurer, his sixth homer of the season. Amarista followed with a solo shot an inning later and the Padres knocked out Maurer (2-7) with three runs in the sixth as they won for just the second time in the past seven games.
Seattle's bats got very little done against Volquez (4-5) and its lineup lost its most potent punch after right fielder Michael Morse had to leave the game in the fifth inning.
Morse was thrown out trying to score from first base on a double by Michael Saunders in the bottom of the fourth. Morse reached third quickly, but as he was waved home by third-base coach Daren Brown, he began grimacing and slowing down. He was thrown out easily and replaced the next inning by Jason Bay.
The team announced that Morse has a right quadriceps strain and is day to day.
Morse getting thrown out at the plate proved to be Seattle's last scoring chance. Saunders was left stranded at third and Volquez retired the next eight and 12 of 14 batters before leaving with two outs in the eighth inning. The only hit Volquez allowed after Saunders' double was Kyle Seager's two-out single in the eighth.
The only time Volquez faced trouble was the second inning when Seattle loaded the bases with no outs. He got Nick Franklin to hit a grounder to first and Kendrys Morales was forced out at home. Jesus Sucre hit a sacrifice fly to score Morse with Seattle's only run and Volquez got a fly out from Brendan Ryan to end the threat.
Volquez gave up four hits, struck out five and walked three. It was his longest outing of the season.
Yasmani Grandal returned from his 50-game suspension for San Diego and immediately was placed in the starting lineup. He got his first hit of the season when he dumped a sinking liner into left as part of the Padres' three-run sixth.
Seattle got lefty reliever Charlie Furbush up in the bullpen late and Maurer was forced to face Mark Kotsay and Will Venable, both lefties. Kotsay lined a single into left-center to score Yonder Alonso and Grandal. Venable nearly cleared the bases with his drive that was caught at the wall by Endy Chavez.
Furbush took over and immediately walked Everth Cabrera. He got pinch-hitter Chris Denorfia to ground weakly to second, but Franklin -- making the first start of his career -- mishandled the routine ground ball allowing Gyorko to score the third run of the inning.
Notes: Padres IF Logan Forsythe, on the 60-day disabled list with plantar fasciitis in his right foot, is expected to begin a rehab stint at Triple-A Tucson later this week.