OTTAWA (AP) _ Jean-Pierre Dumont scored two of Buffalo's three second-period goals and Dominik Hasek made 29 saves to lead the Sabres to a 4-1 win over the Ottawa Senators on Tuesday night.

Dumont scored at 4:16, just five seconds after an Ottawa penalty had expired, to put Buffalo ahead 2-1. He made it a two-goal Sabres lead with his 20th of the season at 12:18.

Eric Rasmussen and Vladimir Tsyplakov also scored for Buffalo and Doug Gilmour assisted on both of Dumont's goals as the Sabres ended Ottawa's three-game winning streak.

Buffalo won its second straight, and sixth in seven games.

Hasek, who allowed Shawn McEachern's goal 41 seconds into the second, as the Sabres drew within eight points of first-place Ottawa in the Northeast Division.

Buffalo finished the season series with four wins in five games against the Senators.

Ottawa, which held a 30-20 edge in shots, had won seven of eight since losing 2-1 to the Sabres in overtime on Feb. 10. The Senators' only blemish over that stretch was a 2-0 loss in Buffalo on Feb. 19.

Rasmussen scored Buffalo's first goal 50 seconds into the second, beating Ottawa goalie Patrick Lalime just nine seconds after McEachern had opened the scoring for the Senators with his 22nd.

Dumont put the Sabres ahead 3:26 later with his 19th and made it 3-1 on a power play later in the period to reach 20 goals for the first time in his career.

Tsyplakov scored on a breakaway with 47 seconds left in the third.

Notes: Defenseman Brian Campbell, recalled from Rochester of the AHL two days earlier, dressed for Buffalo. ... The game was delayed for several minutes 45 seconds into the first when a wayward shot by Senators defenseman Jason York shattered a pane of glass at the end of the Sabres' bench. ... Ottawa forward Andre Roy served the second game of his two-game suspension for chasing Vancouver's Donald Brashear in the teams' dressing room area following Saturday's game.