David Backes scores in overtime to give Blues a 4-3 win over Stars in Game 2

Blues captain David Backes scored off a rebound during a power play 10:58 into overtime and St. Louis beat the Dallas Stars, 4-3, in Game 2 on Sunday to get even in the second-round series.

St. Louis was on its second power play of overtime after Antoine Roussel was called for interference.

Vladimir Tarasenko took a slap shot that defenseman Alex Goligoski blocked. But the Blues kept charging and Backes scored on the rebound of Alexander Steen’s shot.

The best-of-seven series matching the Western Conference’s top two teams switches to St. Louis for Game 3 on Tuesday night. Game 4 will also be there Thursday before the series returns to Dallas for Game 5 on Saturday.

Dallas forced overtime by erasing a two-goal deficit in the third period, when the Stars outshot St. Louis, 13-2.

Antti Niemi had stopped 19 consecutive shots since relieving Kari Lehtonen after the first period until Backes scored.

Blues goalie Brian Elliott had 31 saves, including big shots by Jason Spezza and Stars captain Jamie Benn about a minute apart in overtime.

St. Louis had a quick extra-man chance in overtime when John Klingberg was whistled for holding as Tarasenko, who scored 40 goals in the regular season and four in the first-round series, was charging toward the net. But Niemi, who took over as the Stars’ goalie in the second period, stopped three shots in that 2-minute span.

Spezza and Benn had their shots before the game-turning penalty, and Backes’ third goal of the playoffs came 17 seconds into the power play.

Benn scored the OT-forcing goal with 2:36 left in regulation. Kris Russell’s shot hit Cody Eakin, and Benn then knocked the loose puck into the net.

at San Jose 3, Nashville 2: Joe Pavelski scored the tiebreaking goal with 2:40 left in regulation and Martin Jones stopped 37 shots to lead the Sharks to a 2-0 lead in the Western Conference series.

Logan Couture added a power-play goal and Joe Thornton scored an empty-netter to put the Sharks in control as the series shifts to Nashville for Game 3 on Tuesday night. San Jose won the most road games in the NHL this season and all three in Los Angeles in the first round.

Mattias Ekholm tied the game earlier in the third and Ryan Johansen also scored for Nashville, but the Predators head home from California in much worse shape than they did in the first round when they won the first two games in Anaheim on the way to taking the series in seven games. Pekka Rinne made 22 saves.

After San Jose blew a one-goal lead earlier in the third, the top line delivered when it mattered most. Thornton slid a cross-ice pass to Matt Nieto, whose initial shot was stopped by Rinne. But Pavelski batted the rebound in for his sixth goal of the playoffs to give the Sharks the lead.

Thornton scored an empty-net goal that proved crucial when Johansen scored with 3.6 seconds left for Nashville.