Adam Frazier hit a tiebreaking RBI double in the ninth inning, and the Seattle Mariners erased a seven-run deficit while topping the Toronto Blue Jays 10-9 for a sweep of their AL wild-card series.
It was the biggest road comeback win in playoff history and baseball's largest comeback victory to clinch a postseason series.
Next up for resilient Seattle is Houston in the AL Division Series.
Making the franchise's first playoff appearance since 2001, Seattle trailed 8-1 through five innings, but it tied it at 9 with four runs in the eighth.