Chris Kelly scored on a long slap shot 1:18 into overtime and the defending Stanley Cup champion Boston Bruins beat the Washington Capitals 1-0 Thursday in the opener of their first-round playoff series. Braden Holtby made 29 saves for the Capitals. Tim Thomas stopped all 17 shots he faced for Boston. The game was physical and scoreless until Thomas turned back a Washington attack early in the extra period. Brian Rolston dropped it for Benoit Pouliot to clear the zone and he pushed it up to Kelly, who slapped it over Holtby's glove for the game-winner. Rangers 4, Senators 2: Marian Gaborik and Brian Boyle scored minutes apart in the second period to break open a tight game, and top-seeded New York opened its first-round Eastern Conference series with a win. The Rangers, the No. 1 seed in the East for the first time since they won the Stanley Cup in 1994, shook off their 1-2-1 regular-season mark against the Senators and easily dispatched them in Game 1. Ryan Callahan scored in the first period, Gaborik and Boyle pushed the lead to 3-0, and Brad Richards added a goal in the third for the Rangers. New York will host the No. 8 Senators again Saturday before the best-of-seven series shifts to Ottawa for Games 3 and 4. Sharks 3, Blues 2: Martin Havlat scored his second goal of the game 3:34 into the second overtime, giving the San Jose Sharks a victory over the St. Louis Blues in Game 1 of their playoff series. Andrew Desjardins tied it for San Jose with 5:16 in regulation, banging in a one-timer from the slot from Tommy Wingels, and Dan Boyle had two assists. Antti Niemmi made 40 saves. Patrik Berglund scored his first two career playoff goals in the third period for the Blues, the No. 2 seed in the Western Conference. St. Louis swept the regular season series 4-0 for the first time since 1994-95 and lost only six games in regulation at home during the regular season. Coyotes 3, Blackhawks 2: Martin Hanzal scored 9:29 into overtime and the Phoenix Coyotes opened the playoffs with a 3-2 win over the Chicago Blackhawks. Despite losing leading goal scorer Radim Vrbata to an injury early, Phoenix had a 2-1 lead after Taylor Pyatt and Antoine Vermette scored in the second period. Coyotes goalie Mike Smith stopped two shots without his stick during a power play in the third period, but Chicago defenseman Brent Seabrook put a rebound past him with 14.2 seconds left in regulation to send the game to overtime.