Answer
The ALDS, the first round of the postseason, was clinched by Ortiz's heroics. In a tense game against the Anaheim Angels, Ortiz stepped up to the plate in the bottom of the 12th inning with the score tied. With one swing of his powerful bat, he sent the ball soaring over the Green Monster, securing a dramatic walk-off victory and sending the Fenway Park crowd into a frenzy.