After three close, low scoring games the offense came alive for the Bruins and Blackhawks in game four. Chicago scored the last goal in a 6-5 overtime win.Johhny Boychuk tied the game for Boston with just over seven minutes to play forcing the overtime period. In overtime Brett Seabrook's slapshot beat Tuukka Rask to end the game and tie the series at 2 games apiece.

Game 5 is back in Chicago Saturday. Live coverage on 92.9 The Ticket starts at 7:30pm.