PITTSBURGH (AP) - 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 that will require surgery.

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.

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.

Stephane Da Costa scored his first goal of the season, and Jim O'Brien also scored for Ottawa. The Senators lost for the fifth time in seven games.