DENVER — Mikko Rantanen scored a power-play goal at 2:07 of overtime, and the Colorado Avalanche extended their lead in the Stanley Cup Second Round with a 3-2 win against the Vegas Golden Knights in Game 2 at Ball Arena on Wednesday.
Rantanen took a cross-ice pass from Nathan MacKinnon and scored with a shot from the right face-off dot.
Brandon Saad and Tyson Jost scored, Samuel Girard had two assists, and Philipp Grubauer made 39 saves for Colorado, the No. 1 seed in the Honda West Division, which won 7-1 in Game 1 on Sunday.
Alec Martinez and Reilly Smith scored, Shea Theodore had two assists, and Marc-Andre Fleury made 22 saves for Vegas, the No. 2 seed.
Game 3 of the best-of-7 series is at Vegas on Friday.
Saad gave the Avalanche a 1-0 lead at 3:39 of the first period, skating down the slot and shooting five-hole after a breakout pass from Girard. Saad has scored a goal in five straight games.
Martinez tied 1-1 at 9:32 with a one-timer short side from the right face-off circle after a pass from Max Pacioretty.
Jost made it 2-1 at 17:08 with a shot from above the left hash marks on a power play.
Smith tied 2-2 at 10:28 of the second period. Jonathan Marchessault sent Smith down the slot for a high backhand glove side.
The Golden Knights outshot the Avalanche 15-6 in the third period and 40-23 through the third period.
Colorado has won six straight games to begin the Stanley Cup Playoffs after sweeping the St. Louis Blues in four games in the first round.