J.R. Smith’s First Quarter Buzzer Beater vs. Celtics in NBA Playoffs 2013 [VIDEO]J.R. Smith’s First Quarter Buzzer Beater vs. Celtics in NBA Playoffs 2013 [VIDEO]- J.R. Smith is reminding everyone why he was named the 2012-13 NBA Sixth Man of the Year.Jeff MonaskiJeff Monaski