Jan 18, 2013; Boston, MA, USA; Chicago Bulls small forward Jimmy Butler (with ball) collides with Boston Celtics point guard Rajon Rondo (bottom) during the second half at TD Garden. (Mark L. Baer-USA... more 

Jan 18, 2013; Boston, MA, USA; Chicago Bulls small forward Jimmy Butler (with ball) collides with Boston Celtics point guard Rajon Rondo (bottom) during the second half at TD Garden. (Mark L. Baer-USA TODAY Sports) less