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Pittsburgh Penguins captain Sidney Crosby heads to the bench after his 50th goal on Sunday in Uniondale, N.Y. ((Kathy Kmonicek/Associated Press))

Pittsburgh Penguins captain Sidney Crosby scored his 50th and 51st goals in a road win over the New York Islanders on Sunday.

Crosby added three assists in a 6-5 overtime win for the Penguins. He finished with 109 points in total, second behind Vancouver's Henrik Sedin for the NHL points lead.

With the two goals, the Cole Harbour, N.S., native finished in a tie with Steve Stamkos of Tampa Bay at 51 goals. The two young stars will share the Rocket Richard Trophy honours.

"I put a lot of hard work in," Crosby said. "Last summer and throughout the season it was something I was trying to focus on. You're doing it to help yourself and help your team. It was a nice bonus."

Defenceman Jordan Leopold scored his second overtime winner in eight days after the Islanders rallied from a 5-2 deficit in the third period with goals from Kyle Okposo, Jon Sim and John Tavares.

Crosby assisted on Pittsburgh's first two goals and then scored No. 50 at 17:03 of the first past Dwayne Roloson.

Crosby was credited with his 50th against the Islanders on Thursday but replays indicated that his shot grazed teammate Bill Guerin before going into the net.

Crosby's previous high in a season was 39, achieved in his 2006-07 rookie campaign.

Crosby made a bid for finishing ahead of Stamkos with less than a minute left in the game, wheeling around the New York end and behind the net before coming out into the slot and having his shot blocked.

"He was in a [scoring] race and we wanted to put him in a position to do what he could," Pittsburgh coach Dan Bylsma said. "It's a delicate balance to try to get to the playoffs as healthy as we can while also playing the game."

Crosby finished with six goals and 11 assists in six games against the Islanders this season.

Evgeni Malkin also had a huge game for the Penguins, with two goals and two assists. Malkin finished with 28 goals and 49 assists, a total 36 points behind the pace last season that saw him claim the Art Ross Trophy as top scorer in the league.

Penguins enforcer Eric Godard notched his first on the season's final day.

Pittsburgh was already guaranteed a first-round matchup with the Ottawa Senators heading into Sunday's game and decided to rest goalie Marc-Andre Fleury in favour of Brent Johnson.

The Islanders scored three times on the power play. Tavares got two of them, with Matt Moulson finishing his surprising season with 30 goals.

"It's a point here for us and we made a lot of strides," Tavares said. "We're starting to find what works for us and our identity. It should be an exciting time next year for us.

"We're an up-tempo team that has a very good young core with a lot of upside."

New York finished with a 34-37-11 record, putting them 13th in the Eastern Conference. It marked an 18-point improvement from last season.

With files from The Associated Press