PITTSBURGH -- James Neal scored twice and Sidney Crosby had a goal and two assists to help the Pittsburgh Penguins beat Ottawa 4-2 on Wednesday night in a game marred by the loss of Senators star defenseman Erik Karlsson to a left Achilles injury.
The Norris Trophy winner last season as the NHL's top defenseman, Karlsson was cut by Penguins forward Matt Cooke's skate blade as the two tangled along the boards late in the second period. The Senators said Karlsson will need surgery.
Pascal Dupuis also scored for Pittsburgh, Paul Martin had two assists, and Marc-Andre Fleury made 26 saves. The Penguins snapped a two-game losing streak to pull within a point of Eastern Conference-leading New Jersey.
BLUES 4, RED WINGS 3, OT
DETROIT -- Alexander Steen stuffed in a rebound 52 seconds into overtime, lifting St. Louis past Detroit for a slump-stopping victory.
St. Louis snapped a five-game losing streak that followed a 6-1 start.
The Red Wings had won a season-high three straight, a stretch that started with a 5-1 victory over St. Louis, and had beaten the Blues four games in a row at home. Detroit blew a two-goal lead in the first period and chances to win in the third period on a pair of power plays.
FLAMES 7, STARS 4
CALGARY, Alberta -- Mike Cammalleri had three goals and an assist in his return from a hip injury to lead Calgary past Dallas.
After missing the last three games because of a hip flexor, Cammalleri scored his first three goals of the season to reach 200 for his career.
Roman Czervenka added a goal and an assist, and Jay Bouwmeester and Jiri Hudler also scored. Alex Tanguay, Lee Stempniak and Jarome Iginla each had two assists, and Leland Irving made 30 saves to improve to 2-1-1.
Brendan Morrow scored twice for the Stars, Eric Nystrom and Cody Eakin added goals, and Jaromir Jagr had two assists. The Stars had won four straight, including a 4-1 victory in Edmonton on Tuesday night.
Copyright 2013 by The Associated Press
This story is from ESPN.com's automated news wire. Wire index
MORE NHL HEADLINES
- Howe's family: Stem cell effect 'miraculous'
- Hawks' Crawford back Saturday after 8 games
- Maatta 3rd Penguin to test positive for mumps
- Devils snap 5-game slide; Kinkaid wins 1st