Lundqvist dazzles in 1-0 win at Buffalo
Rangers goalie stops 34 shots, then Callahan delivers in the OT shootout
Callahan scored in the fifth round of the shootout by driving in on Ryan Miller, leaning to his right and snapping a shot into the open left side.
Marian Gaborik had scored in the first round of the shootout and the Sabres' Jason Pominville answered in the third round, beating Lundqvist on the stick side.
Both goalies earned a shutout, with Miller stopping 29 shots through overtime. It was Lundqvist's sixth shutout of the season, his third in his last five starts and 41st of his career - which puts him alone in second place on the team's all-time list, one ahead of Dave Kerr.