NEW YORK -- Raul Ibanez hit two home runs and drove in six runs, and the Seattle Mariners used a seven-run first inning to coast to a 12-2 rout of the New York Yankees on Wednesday night.
Ibanez, who hit a first-inning grand slam, had his 17th career two-home run game and drove in six runs for the fourth time in his career. He fell one RBI short of his career high, set July 14, 2002, for the Kansas City Royals.
He also continued his run of impressive power hitting at Yankee Stadium. Ibanez has nine home runs in his last 11 games in the Bronx, including the last year's postseason, when he became the first player to hit three home runs in the ninth inning or later in the same series.
Ibanez was not alone in helping Seattle produce season highs in runs and hits (16) while matching its season best for home runs. The hit total was Seattle's highest since the Mariners had 20 in a 21-8 win at Texas on May 30, 2012.
Kyle Seager hit a three-run home run, while Kendrys Morales, Michael Saunders and Mike Morse also had run-scoring hits for the Mariners, who have won 11 of their last 17 games.
Seattle's Hisashi Iwakuma (5-1) capitalized on his best run support as a starting pitcher. He allowed solo home runs to Vernon Wells and Chris Stewart among the eight hits he allowed in seven innings. He won his third straight start by striking out four without a walk. Iwakuma got 11 groundball outs in an 89-pitch outing.
The Yankees were handed their most lopsided loss of the season as their pitching allowed a season high in runs and home runs while coming within one of equaling their season worst for hits allowed.
The tone was set by Phil Hughes (2-3), who recorded two outs in a 36-pitch outing that lasted 17 minutes. He allowed seven runs and six hits. His pitches had little life to them, including the 0-1 curveball that Ibanez hit just over the wall in right-center field.
The game was so lopsided for the Yankees that with two outs in the top of the ninth, shortstop Alberto Gonzalez was called upon to pitch and Wells moved from designated hitter to second base. Gonzalez induced a flyout from Robert Andino.
The Mariners put together their highest scoring inning of the season in the first.
With one out, Hughes walked Ackley on a full count. He then gave up three straight singles, including RBI hits by Morales and Morse.
Following a walk to Justin Smoak, Ibanez made it 6-0 with his 11th career grand slam, sending a 0-1 curveball just over the right-center field wall. After giving up an RBI double to Saunders, Hughes was replaced by Preston Claiborne.
New York scored its lone runs when Wells hit a solo home run with two outs in the first inning and Stewart led off the fifth with a homer.
Seattle added to the lead when Ibanez hit a two-run home run off rookie reliever Brett Marshall in the fifth.
NOTES: Seattle RHP Felix Hernandez's back stiffness does not appear to be an issue, and manager Eric Wedge said it should not alter his preparation for his next scheduled start Saturday afternoon in Cleveland. ... Seattle OF Franklin Gutierrez, out since April 23 with a strained right hamstring, ran the bases Wednesday and is expected to head to Triple-A Tacoma to start a rehab assignment. ... INF David Adams became New York's fourth starting third baseman when he had his contract purchased from Triple-A Scranton/Wilkes-Barre. Adams nearly became a Mariner in July 2010 when the Yankees were attempting to acquire LHP Cliff Lee and said people come up to him and mention the failed deal. "I've never thought anything of it," Adams said. "Trades fall through all the time. Who knows what was going on behind the scenes? That's the way I look at it. I'm here today, and that's all I worry about." ... Adams took the place of INF Chris Nelson, who was designated for assignment two weeks after being acquired from the Rockies. ... New York DH Travis Hafner was held out of the lineup due to a sore shoulder that is not believed to be serious.