Boston Celtics head coach Doc Rivers reacts to a foul call on his team in the first half of an NBA basketball game against the Los Angeles Clippers in Los Angeles, Thursday, Dec. 27, 2012. (AP ... more 

Boston Celtics head coach Doc Rivers reacts to a foul call on his team in the first half of an NBA basketball game against the Los Angeles Clippers in Los Angeles, Thursday, Dec. 27, 2012. (AP Photo/Jae C. Hong) less