Every five days this season, the Yankees have sent Phil Hughes to the mound wondering which version of the pitcher they will get.

Thursday night, Good Phil showed up at Safeco Field.

Hughes held the Mariners to one unearned run on three hits over seven-plus innings to lead the Yankees to a 6-1 win to open a four-game series, getting some revenge against the team that torched him in a first-inning knockout three weeks ago. Hughes (3-4) walked two and struck out seven.

Robinson Cano’s three-run homer sparked a six-run third inning against Aaron Harang (2-6), who gave up a solo shot by Mark Teixeira two pitches later.

Ichiro Suzuki had an RBI in his return to Seattle, where he played from 2001 until last summer, when he was traded to the Yankees in late July. Vernon Wells drove in the other run for the Bombers, who won their fourth straight game.

Hughes has posted seven strong starts and five stinkers during this up-and-down season. In the seven good ones, he is 2-0 with a 1.69 ERA; in the five bad outings, he is 1-4 with a 13.25 ERA.

His last start against the Mariners obviously fell into the latter category. On May 15, Hughes failed to make it through the first inning, giving up seven runs while recording only two outs in what was easily the worst outing of his career.

Hughes bounced back with solid starts against the Orioles and Mets (despite getting a no-decision in each) after the Mariners disaster, but he was knocked around for five runs in 4.1 innings in a loss to the Red Sox on Saturday.

A few hours before Thursday’s game, Joe Girardi expressed confidence that Hughes would bounce back yet again. His faith in the pitcher proved well-founded.

“I thought he mixed his pitches extremely well,” Girardi said. “He used all his pitches. He did a really good job throwing strikes.”

Hughes retired the first eight batters he faced. Brendan Ryan picked up Seattle’s first hit with a two-out single in the third, but Hughes got Jason Bay — the former Met bust who is batting .214 but somehow was the leadoff hitter — to ground out and moved on with his impressive night.