Joe Pavelski scored the overtime winner as the top-seeded San Jose Sharks beat the Colorado Avalanche 2-1 Tuesday to tie their NHL playoff series at 2-2. Pavelski gathered up a loose puck deep in Colorado's zone and beat Craig Anderson with a shot into the right corner. Dan Boyle gave the Sharks an early lead, knocking in a slap shot. The Avalanche countered with a second-period goal by Paul Stastny, his first of the series. All four games have been decided by a goal, the last three going into overtime. Game 5 is Thursday in San Jose. Evgeny Nabokov stopped 33 shots for the Sharks, and Anderson blocked 43 for Colorado. Flyers 4, Devils 1: In Philadelphia, the hosts took a commanding 3-1 lead in their series against New Jersey. Jeff Carter scored two goals and Danny Briere had one to end their series scoring droughts, while unlikely postseason star Daniel Carcillo scored his second goal in two games for the Flyers. Game 5 is Thursday in New Jersey. The Flyers have won 17 of 19 playoff series when they hold a 3-1 lead. Penguins 7, Senators 4: In Ottawa, Sidney Crosby had four points, including two of Pittsburgh's five second-period goals, leading the Penguins to a 3-1 series lead over Ottawa. Crosby assisted on Evgeni Malkin's power-play goal in the first period. Crosby scored two of Pittsburgh's three goals in a 2:25 span early in the second. Matt Cooke scored 12 seconds after Crosby's first goal to make it 3-0, and the Penguins' 22-year-old captain added his fourth goal of the series at 6:12. Chris Kunitz had a goal and two assists and Maxime Talbot had a goal and an assist as the teams combined for eight goals in the second, one short of the NHL playoff record for goals in a period. Jordan Staal scored in the third period. Matt Cullen had a goal and two assists for Ottawa. Red Wings 3, Coyotes 0: In Detroit, the hosts levelled the series against Phoenix at 2-2. Jimmy Howard had a 29-save shutout, including a save without his helmet, and Henrik Zetterberg scored twice. Phoenix will be at home Friday, but has to return to Detroit for Game 6 on Sunday. Zetterberg's first goal stood after a video review. Earlier, replays appeared to show Detroit's Valtteri Filppula got a puck past the goal line before it bounced on it, lighting the lamp. A video review upheld the on-ice decision to wave off the goal. Pavel Datsyuk also scored for Detroit. Predators 4, Blackhawks 1: In Nashville, Tennessee, Nashville took its first ever 2-1 lead in an opening-round series, edging ahead of Chicago.