BOSTON - Miroslav Satan scored on a power play at 7:41 of the second overtime to give the Boston Bruins a 3-2 victory over the Buffalo Sabres on Wednesday night and a 3-1 lead in the Eastern Conference series.
The Bruins got the power play in the second extra period when Buffalo's Drew Stafford was caught on the ice as a sixth skater. Satan got a pass from Michael Ryder in front of the net and put it past Ryan Miller.
Tuukka Rask made 35 saves for Boston and also assisted on Satan's goal.
Ryan Miller stopped 36 shots for the Sabres.
Game 5 is Friday night in Buffalo.
Tim Kennedy and Steve Montador scored for Buffalo, which opened a 2-0 lead after two periods. David Krejci and Patrice Bergeron scored in the third period for Boston to send the game into overtime.
Both goalies made stunning saves to keep their teams in the game.
Rask reached out to knock away a puck that even 6-foot-9 defenseman Zdeno Chara couldn't reach, preserving the tie with 11 minutes left in regulation. Miller stopped Blake Wheeler on a short-handed breakaway, then got a glove on a sneaky backhander from Satan early in the first overtime.
Capitals 6, Canadiens 3
MONTREAL - Alex Ovechkin broke a tie with 8:51 left with his second goal of the game and Washington pulled away for a 3-1 lead in the Eastern Conference series.
Ovechkin opened the scoring at 8:10 of the first period with Washington's first power-play goal of the series. Mike Knuble tied it at 2 with the Capitals' second short-handed goal in two games with 6.3 seconds left in the second.
Ovechkin added his second of the game and fourth in three games to put Washington up 3-2. Jason Chimera made it 4-2 52 seconds later. The Capitals got empty-net goals from Knuble with 2:27 left and Nicklas Backstrom with 10.1 seconds remaining.
Semyon Varlamov made 36 saves to win his third in a row for Washington.
Carey Price stopped 32 shots in his first start of the series for Montreal.
Game 5 is Friday night in Washington.
Canucks 6, Kings 4
LOS ANGELES - Henrik Sedin scored the go-ahead goal with 2:52 to play, and Vancouver scored four times in a wild third period to even the series at 2.
Mikael Samuelsson, Sami Salo and Ryan Kesler also scored in the final 12:31 for the Canucks, who rallied from three one-goal deficits while standing on the brink of a 3-1 deficit in the Western Conference series.
After Salo put Vancouver ahead with 7:44 left, Wayne Simmonds answered for Los Angeles 1:02 later. Sedin then got loose on a rush, and the NHL scoring champion put his first goal of the series behind Jonathan Quick.
Roberto Luongo made 22 saves, and Daniel Sedin had three assists to help the Canucks win despite yielding two more power-play goals to the Kings.
Game 5 is Friday night in Vancouver.