CHICAGO _ Momentum can be fickle and fleeting in the postseason, where a game, a series and ultimately a season can turn on one pitch, one hit, one play.
For the 2004 Boston Red Sox, it was the Dave Roberts' stolen base that sparked a ninth-inning comeback against the New York Yankees in Game 4 of the American League Championship Series.
The Red Sox became the first team to erase a three-games-to-none deficit and win a seven-game series and went on to sweep St. Louis for their first World Series championship since 1918.
The 2016 Chicago Cubs, who are looking for their first championship since 1908 and first World Series berth since 1945, hope to reflect on Ben Zobrist's bunt single in the fourth inning of Game 4 of the National League Championship Series as a similar catalytic event.
The Cubs were shut out in Games 2 and 3 and hitless through three innings of Game 4 when Zobrist led off the fourth with a bunt off Dodgers left-hander Julio Urias.
That sparked a four-run rally that snapped a 21-inning scoreless streak and started a 15-inning stretch in which the Cubs busted out for 18 runs on 25 hits. After going 2-for-16 (.125) with runners in scoring position in the first three games, Chicago went 10-for-31 (.323) with runners in scoring position in Games 4 and 5.
"I believe in my team, I like what I've seen the last couple of games," said Cubs catcher Miguel Montero, whose pinch-hit grand slam gave Chicago an 8-4 win in Game 1. "The confidence is building, and we feel better about ourselves. The hitters are starting to feel a little sexy at the plate, which is great."
