To enhance its current game coverage dubbed "Wednesday Night Rivalry," NBCSN created a sister show that pays tribute to the most explosive matchups in the NHL's past. "NHL Rivals" documents the storied history shared -- but not nicely -- by many of the teams featured on "Wednesday Night Rivalry," as told by current and former players, broadcasters and journalists. Included are plenty of highlights from knock-down, drag-out games between the Islanders and Rangers, Blackhawks and Blues, Flyers and Capitals, and Bruins and Canadiens, among others, that ultimately paved the rivalry road.