SEATTLE — Ken Griffey Jr. homered and drove in four runs, putting the New York Yankees' playoff party on hold by leading the Seattle Mariners to a 7-1 victory Sunday.

The loss prevented New York from clinching a spot in the postseason. The Yankees can secure their 14th playoff berth in 15 years with a victory at the Los Angeles Angels on Monday night or a Texas loss at Oakland.

The 39-year-old Griffey lined an RBI double in the first inning, then cracked a three-run homer in the second off starter Joba Chamberlain.

Seattle took two of three from the Yankees, who lead the AL East by five games over Boston with 12 to play. One more win — or a Rangers loss — assures New York of at least the wild card.