Jarome Iginla helps Penguins past Bruins » Jerome Iginla, Nathan Horton

Nathan Horton suffered his injury fighting Jarome Iginla. (AP)

Nathan Horton suffered his injury fighting Jarome Iginla. (AP)

Boston Bruins’ Nathan Horton (18) and Pittsburgh Penguins’ Jarome Iginla (12) exchange punches during the first period of an NHL hockey game, April 20, 2013, in Boston. (AP Photo/Mary Schwalm)