James apologizes for 'retarded' comment

LeBron James says he's sorry for using the word "retarded" in a post-game news conference.   

The Miami Heat star muttered the word after Game 3 of the Eastern Conference semifinals as he and Dwyane Wade listened to a question about Wade's takedown of Boston guard Rajon Rondo.   

James had his hand covering his mouth when he said "that's retarded" as a reporter asked Wade whether the play that dislocated Rondo's elbow was dirty.   

After Game 4 on Monday night, James opened his post-game comments by apologizing for using "the R-word."