TORONTO (AP) -- The Pittsburgh Penguins lost more than a game.
Curtis Joseph made 23 saves for his second straight shutout and Mats Sundin scored twice as the Toronto Maple Leafs beat Pittsburgh 4-0 Saturday night.
Penguins star Mario Lemieux left the game after the first period with a strained left hip muscle.
"It was a little sore before the game," Pittsburgh coach Rick Kehoe said. "He went out in the warmup and said he'd give it a try. After the first he said he couldn't go anymore."
Lemieux has already missed two games this season with a strained hip. The Penguins' star missed Friday's practice and was listed as questionable for Saturday's game. He is doubtful for Sunday's game against Florida.
"You could tell that he had problems playing," Sundin said. "Obviously, with Mario out, they were hurt as a team."
The Penguins lost their first game under Kehoe. Pittsburgh had been 4-0-0-1 since Kehoe replaced the fired Ivan Hlinka on Oct 15.
Jonas Hoglund had two assists for the Maple Leafs, who last played the Penguins on Dec. 27, the day Lemieux began his second comeback.
"Mario is a huge part of our team," Pittsburgh's Stephane Richer said. "When he's not in the lineup it makes a big difference."
Gary Roberts and Darcy Tucker also scored for the Maple Leafs.
Sundin, who also had an assist, narrowly missed a hat trick when he hit the post with a shot in the second period.
"He had two huge goals for us," Joseph said. "You'd always like him to see him get the third one, but it didn't happen."
Joseph, who shutout Boston 2-0 last Tuesday, didn't have to make any spectacular saves against Pittsburgh, but was steady throughout.
Joseph noticed Lemieux left.
"They had a power play early and he wasn't on the ice," Joseph said. "I quickly checked down the bench and saw he wasn't there. It wasn't a relief, but I took note."
Sundin fired a shot between the legs of goalie Johan Hedberg 11:04 of the first.
Sundin scored his fifth goal of the season after Hoglund made a nice behind-the-back pass with less than a minute remaining in the first.
Roberts' backhander gave Toronto a 3-0 lead at 9:31 of the third.
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