"Martínez is perhaps best remembered for his performance in the 1995 American League Division Series against the New York Yankees in which he hit .571 and was on base 18 times in 5 games. In game 4 of that series, he hit a three-run homer, then a grand slam home run that broke a 6-6 tie, en route to an 11-8 victory. His RBI total in that game set a single-game postseason record.
The win knotted the best-of-five series at two games apiece and forced game 5. Down 5-4 in the 11th inning of that decisive game, Martínez hit a two-run double, called 'The Double' by Mariners fans, off Jack McDowell, winning the game for the Mariners, 6-5, and series, 3-2. The win sent the Mariners to the American League Championship Series for the first time in franchise history."