There were 21 games last season that the Mariners won on the last at-bat or as a walk-off. One of them was a 10-inning game at Tampa Bay on May 26. The Rays led the Mariners 1-0 until the 8th inning when Kyle Seager connected for a grand slam. But when the Rays answered with three runs in the bottom of the 9th, Kyle had to do it again, with a solo homer in the 10th to seal the victory.
For sheer enjoyment, there may not be anything more fun than a walk-off.