Watch: Lightning's Killorn scores series clincher off Mrazek misplay

Game 5 appeared set for extra time - until this happened.

Detroit Red Wings goaltender Petr Mrazek's attempt to play the puck behind his net late in Thursday's third period was intercepted by Tampa Bay Lightning forward Ryan Callahan, who dished it to Alex Killorn out front.

Puck in net, 1-0 lead held until the final buzzer, series over.