starting in 2004, however, ortiz became known for his clutch hitting. he hit two walk-off home runs in the postseason. his first came when the red sox swept the anaheim angels in the american league division series. he hit another walk-off home run in game 4 of the alcs against the yankees. and he also had a walk-off single in game 5. he was named alcs mvp. the red sox went on to win their first world series since 1918. they won two more world series championships in 2007 and 2013.