Yankees vs. Orioles, Game 4 of the ALDS, Yankee Stadium: average of 5.2 million viewers on TBS.
Celtics vs. Heat, Game 1 of the NBA Regular season in South Beach: 5.3 million viewers on TNT.
Of course, those NBA numbers would have been significantly higher if not for Sandy, which knocked out power all over the Northeast. In 2010, the Celtics/Heat opener drew over 7.3 million viewers.
Previously: Yankees & Orioles Drama on TBS Tops Steelers & Titans Drama on NFL Network in the Ratings
Previously: World Series Ratings: Giants Sweep of the Tigers Generated Some of the Worst Overnight Ratings in World Series History