A coach's challenge in the nick of time resulted in third-period momentum for the Chicago Blackhawks. The defending Stanley Cup champions made sure it stayed that way. Andrew Shaw stuffed home a rebound on a power play with 4:19 remaining, minutes after Joel Quenneville prevailed on a call that resulted in an offside call that negated a goal, and the Blackhawks pulled even with the St. Louis Blues in their first-round series with a 3-2 victory Friday night. Read more http://espn.go.com/nhl/recap?gameId=400874084