4. John Lowenstein, Baltimore Orioles (Oct. 3, 1979)—Lowenstein's three-run, pinch-hit home run in the 10th inning off John Montague gave the O's a 6-3 win in game one of the 1979 ALCS. Lifted by Lowenstein's walk-off hit, Baltimore went on to win the series in four games. However, the Orioles lost the World Series in seven games to the Pittsburgh Pirates.3. David Ortiz(notes), Boston Red Sox (Oct. 18, 2004)—Ortiz beat the Yankees in game five of the 2004 ALCS with a single in the bottom of the 14th; it was the second night in a row that Ortiz saved the Red Sox. In game four, he knocked home the winning run in the 12th, as Boston embarked on the greatest post-season comeback in baseball history. After dropping the first three games of the series, Boston won the next four behind Big Papi to advance to and win the World Series against the St. Louis Cardinals2. Chris Chambliss, New York Yankees (Oct. 14, 1976) — Chambliss ended game five of the 1976 ALCS and sent the Yankees to the World Series with a solo blast off Kansas City's Mark Littell in the bottom of the ninth inning at Yankee Stadium. New York went on to lose the World Series in four games to the Cincinnati Reds, but Chambliss' home run lives in as part of Yankees tradition.1. Aaron Boone(notes), New York Yankees (Oct. 16, 2003) — Red Sox fans may want to look away. Boone's blast down the left field line off Tim Wakefield(notes) in game seven of the 2003 ALCS propelled the Yankees into the World Series and left Red Sox Nation stunned. Boston blew a 5-2 lead in the eighth inning before losing in the 11th to the hated Yankees. Boone's blast is the only game seven walk-off hit in the history of the ALCS. Boston would get revenge a year later (see moment No. 3).Adam Martini is a freelance sports writer who roots for the New York Mets (and any team that is playing the New York Yankees). An avid fantasy baseball player and fan of Major League Baseball, his games of choice growing up were Strat-O-Matic and MicroLeague Baseball. SourcesBaseball-Reference.com.Note: This article was written by a Yahoo! contributor. Sign up here to start publishing your own sports content.