CLEVELAND -- Anthony Vasquez, making his Major League debut on Tuesday night, received the kind of run support Seattle starters can usually only dream of as the Mariners overwhelmed the Indians, 12-7, in the second game of a doubleheader.
Vasquez, the fourth rookie to crack Seattle's starting rotation this season, gave the Mariners 5 1/3 innings as a spot starter after being promoted from Triple-A Tacoma.
The 24-year-old took advantage of Seattle's second-highest scoring output of the season to pick up the win, despite allowing six runs on nine hits, with two walks and two strikeouts.
"You always wish you could do better, but we got the win, and that's the most important thing," said Vasquez, who flew in from Reno on Monday after getting word of his callup. "The run support helped a lot. I was able to relax a little bit and settle in. But when you miss your spots like that, sometimes they can make you pay up here."
The Mariners scored five runs in both the third and fourth innings, taking advantage of Cleveland's own rookie starter Zach McAllister, who was making just his second big league appearance.
Vasquez gave up a 399-foot home run to right field by Kosuke Fukudome in the second inning and a 386-foot blast to Shin-Soo Choo in the third in a couple "welcome to the big leagues" moments.
But using an array of off-speed offerings and a fastball in the mid-80s, Vasquez kept the Indians off balance just enough to win his debut and help Seattle stop Cleveland just a few hours after the Indians had taken the opener, 7-5, with a walk-off homer by Choo.
Manager Eric Wedge said Vasquez's pitches were up a little too much, but he understood what the youngster from San Antonio, Texas, was going through.
"When he was down, he was good," Wedge said. "He got ground balls and some swing-and-misses. He didn't have quite the command we expected to see. But that first time out is always a mulligan. You get out there, get some experience and hopefully do well. But just getting that first one out of the way -- and he got us a win -- so good for him."
The Mariners cranked out a season-high-tying 17 hits, while the 12 runs was their second-most behind a 13-3 win over Detroit on April 19 at Safeco.
Much of the offensive production again came from members of the Mariners' youth movement, as Trayvon Robinson, Kyle Seager, Dustin Ackley and Mike Carp combined to go 10-for-22 with two home runs, seven RBIs and five runs.
Carp ripped a two-run homer in the third inning, the day after his 20-game run was snapped. It was his sixth long ball of the season, and he has 29 RBIs in 32 games since being recalled from Tacoma.
"It was nice," Carp said of the youthful explosion. "Guys are hitting. Guys are swinging it. We've had some rough games lately, but we're battling. We're going to be doing some things in the next month."
Robinson, acquired in the Erik Bedard trade on July 31 and promoted to the Majors on Aug. 5, capped off a tremendous Tuesday by going 4-for-5 with a double in the nightcap. For the day, the rookie left fielder went 6-for-9 and raised his batting average from .250 to .321.
"I'm starting to get my confidence," said Robinson. "It's still a baseball game. You don't want to over-analyze. That's kind of what I did when I wasn't getting hits. I was like like, 'Oh my gosh, it's this, it's that.' I kind of just slowed it down today."
Seager continued a red-hot road trip with a 3-for-5 game and his second home run of the season, a solo shot in the eighth. He finished the day 6-for-9 with two doubles, in addition to his right-field blast. The 23-year-old is 11-for-21 in the past six road games, raising his season average to .276 in 22 games in the Majors.
"It's been coming, no doubt about it," Wedge said. "He's sped up with the game. He's always been a hitter, wherever he's been. It's going to take anybody some time up here to make an adjustment, I don't care how good you are. And we're seeing that with a lot of our guys."
Even with all that offense, Seattle needed reliever Tom Wilhelmsen to get out of a bases-loaded jam started by Vasquez in the sixth before breathing a little easier.
Wilhelmsen, one of 12 rookies on the 25-man roster, hit Lou Marson and gave up a run-scoring single to Ezequiel Carrera that cut the margin to 11-6 and had the bases loaded before striking out Asdrubral Cabrera and getting Choo on a grounder to second.
Wilhelmsen wound up with four strikeouts in 1 2/3 innings before turning things over to another rookie, Chance Ruffin, in the eighth. Ruffin heated the water by loading the bases and walking in a run -- one of his three walks to five batters faced -- before Jeff Gray ended the suspense by getting Carlos Santana on a popout and Shelly Duncan on a hard line drive that Seager snared at third.
It was Gray's first career save, as he entered in the eighth with the tying run in the on-deck circle before finishing things out with a scoreless ninth.