(Photo credit: Joe Nicholson-Imagn Images)

Leo Rivas hit a two-run homer leading off the bottom of the 13th inning as the Seattle Mariners defeated the visiting St. Louis Cardinals 4-2 on Wednesday to keep pace in the American League playoff race.

Rivas, who entered the game as a pinch runner in the 11th, lined the first pitch of the 13th from St. Louis' Ryan Fernandez (0-3) just inside the right field foul

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