David Backes gave the St. Louis Blues a big gift on his 32d birthday, another overtime goal to go home even.

What a serenade of ‘‘Happy Birthday’’ for the Blues captain from his teammates after Backes scored off a rebound during a power play 10:58 into overtime of Game 2 on Sunday for a 4-3 victory over the Stars in Dallas.

‘‘I want to know what they did with the money their parents gave them for voice lessons,’’ Backes said with a smile.

After blowing a two-goal lead while getting outshot, 13-2, in the third period, the Blues took advantage of their second power-play chance in overtime. Backes followed up Alexander Steen’s shot 17 seconds after Antoine Roussel was called for interference.

‘‘The thing that impressed me more than anything was the way we played in the overtime,’’ coach Ken Hitchcock said. ‘‘We went into attack mode and stayed on it the whole time.’’

Instead of a 0-2 hole, the Blues go home 1-1 in the best-of-seven series. Game 3 is Tuesday night in St. Louis.

When Roussel was asked if the penalty was the right call, he responded, ‘‘I don’t know. They have a tough job. It’s not easy to be a ref out there.’’

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

Backes is only the second player in Blues history with two OT goals in the same postseason, having scored the winner in the opener of the Blues’ first-round series against Chicago.

Jamie Benn knocked a loose puck past Brian Elliott to tie the game at 3 late in the third period, when Cody Eakin got his third assist of the game.

Sharks 3, Predators 2 — Joe Pavelski scored the tiebreaking goal with 2:40 left in regulation and Martin Jones stopped 36 shots to lead host San Jose over Nashville and a 2-0 lead in their second-round playoff 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. Pekka Rinne made 21 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.

Rinne had helped keep Nashville in the game long enough to get the equalizer midway through the third. With San Jose leading 1-0, Rinne robbed Nick Spaling with a pad save on a 2-on-1 with San Jose short-handed.

A few minutes later, Ekholm got the equalizer when his shot from the high slot got past a screened Jones to make it 1-1.

.   .   .

Eric Fehr scored the tiebreaking goal against his former team with about 4½ minutes remaining Saturday night, giving the Pittsburgh Penguins a 2-1 victory over the host Washington Capitals that tied the Eastern Conference second-round series at a game apiece.

Fehr redirected a pass out of a corner from Evgeni Malkin, sending the puck off the right post and past Braden Holtby.

Carl Hagelin had put Pittsburgh ahead in second period of Game 2, before Marcus Johansson pulled Washington even on a power play with about 16 minutes to go in the third.

The series shifts to Pittsburgh for Game 3 on Monday night.