HOUSTON -- The Seattle Mariners used a power display to help out their young starter -- and improve their playoff chances. Dustin Ackley hit two solo homers, and Mike Zunino and Kyle Seager each hit three-run shots in a seven-run fourth inning as Mariners cruised to a 10-5 win over the Houston Astros on Friday night. Ackley homered in the third and eighth innings for his second career multihomer game for the Mariners, who moved a 1/2 game back for the second AL wild card with the victory and Royals loss to Detroit. "I felt good today," said Ackley, who has a career-high 13 homers this season. "I dont know what it was, going into the game. Sometimes you come to a park and its just one of those places where you get a good feeling about it and thats pretty much the way it was." Twenty-one-year-old rookie Taijuan Walker (2-2) yielded eight hits and two runs with seven strikeouts in 5 2-3 innings for his third career win in his return to the rotation for injured left-hander Roenis Elias. It was his first start since July 23. "I think eight runs helped him quite a bit," manager Lloyd McClendon said. "But he knows that club. He knows what theyre capable of doing. More than anything he executed pitches very well tonight. I cant tell you how pleased I was with his execution and his command of the strike zone." Four of Walkers seven career starts have come against the Astros and each of his wins have been in Houston. "Its kind of like my home park, I guess," he said with a laugh. "Home-field advantage." The game was tied at 1 before things fell apart for the Astros in the fourth inning. Logan Morrison reached on an error by Jonathan Villar and an error by Chris Carter allowed Michael Saunders to reach with no outs. Zuninos homer, which bounced off the wall in left-centre, came next to make it 4-1. Brad Peacock (4-9) walked two batters with one out before Robinson Cano chased him with a single for his 900th career RBI. "Those were two routine groundballs, and they turned into a three-run homer," interim manager Tom Lawless said of the errors. "You make those plays, and theres nobody on and two outs. Thats the importance of playing defence." Peacock was replaced by Jake Buchanan, who was greeted with Seagers three-run homer which landed in the bullpen in right-centre and pushed the lead to 8-1. Major league hits leader Jose Altuve bounced back from Thursdays 0 for 6 night with three hits to give him 216, which are the most by a second basemen since Rod Carew had 218 in 1974. Its his 24th three-hit game this season, which sets a franchise record, and he tied Magglio Ordonez for most hits by a Venezuelan player in major league history. "I was 0 for 6 last night and I knew I wasnt going to go 0 for 6 again," Altuve said. "I tried to go up there, swing the bat. I saw like three pitches, three or four. I was ready to swing." Peacock allowed six hits and seven runs -- two earned -- with four walks in 3 1-3 innings in a game where seven of Seattles 10 runs were unearned. Ackley tied it at 1 with a home run in the third inning. His second homer was off Darin Downs and pushed the lead to 9-3 in the eighth. TRAINERS ROOM Mariners: Elias had an MRI in Seattle on Friday after feeling stiffness in his elbow. Manager Lloyd McClendon said that they wont know the results of the MRI until Monday. Astros: Downs left Friday nights game after the homer to Ackley with discomfort in his right oblique. UP NEXT Houstons Dallas Keuchel opposes Chris Young when the series continues on Saturday. Keuchel is first in the American League with five complete games. Young has tied his career-high in wins with 12 this season and is 1-0 with a 3.21 ERA in two starts against Houston this season. Alex Morgan Jersey . None of them are Finlands Pekka Rinne, who stands as Canadas biggest challenge in Thursdays quarter-final round. 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While organizers havent decided if itll be red or green clay, they feel their choice of surface will give the Americans an advantage over Britain, which is expected to be led by defending Wimbledon champion Andy Murray.MONTREAL -- The hand injury suffered by light heavyweight champion Adonis Stevenson in his latest title defence was a bruise and he should be able to resume training in a month, promoter Yvon Michel said Wednesday. X-rays showed there was no fracture. The injury was centred at the base of the index finger and the thumb of his left hand. The southpaw will begin treatments on Monday at the Evolution clinic in Terrebonne, Que. SStevenson (24-1), of Laval, Que.dddddddddddd, said he felt pain in the hand in the second round of his unanimous decision over Andrzej Fonfara on Saturday night in Montreal but was able to continue fighting. It was his third defence of the World Boxing Council title he won in June, 2013. The 36-year-old is one of two Canadians with a world title, along with WBC heavyweight champion Bermane Stiverne of Montreal. ' ' '