Sentence:  It was the Brewers' first <WSD>walk-off</WSD> walk since May 4, 2005, when Damien Miller drew a walk to win the game, 4-3, at home over the Cubs. 
Meaning of the word marked with <WSD> tags:  Any event or action in the bottom of the last inning of a game that scores a run and thereby ends the game with a victory to the team at bat.