Alexander Radulov returned with a goal and an assist on a revitalized Dallas power play, and the Stars beat the New York Islanders 3-1 on Saturday night.

Andrew Cogliano and Denis Gurianov also scored for the Stars, and Ben Bishop stopped 34 shots.

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New York Islanders defenseman Johnny Boychuk (55) looks on as Dallas Stars forward Corey Perry (10) celebrates a goal scored by Alexander Radulov during the first period of an NHL hockey game Saturday, Dec. 7, 2019, in Dallas. (AP PhotoBrandon Wade)

Alexander Radulov returned with a goal and an assist on a revitalized Dallas power play, and the Stars beat the New York Islanders 3-1 on Saturday night.

Dallas Stars forward Andrew Cogliano (11) is congratulated by forward Blake Comeau (15) after scoring a goal during the first period of the team's NHL hockey game against the New York Islanders on Saturday, Dec. 7, 2019, in Dallas. (AP PhotoBrandon Wade)

Radulov, a healthy scratch for the Stars during their win over Winnipeg on Thursday night, scored on a power play to give Dallas a 2-0 lead with just under four minutes left in the first period.

Dallas Stars forward Joe Pavelski (16) screens New York Islanders goaltender Thomas Greiss during the second period of an NHL hockey game Saturday, Dec. 7, 2019, in Dallas. (AP PhotoBrandon Wade)

The Stars have scored four goals in seven power-play opportunities in their last two games. They had two power-play goals only twice in their first 28 games but now have improved their season percentage from 15 to 18 percent.

Dallas Stars forward Andrew Cogliano (11) deflects the puck past New York Islanders goaltender Thomas Greiss (1) during the first period of an NHL hockey game Saturday, Dec. 7, 2019, in Dallas. (AP PhotoBrandon Wade)

New York had the first three shots on goal in the game, including two on the power play, but Dallas came right back with seven straight shots on goal and finished the period with a 16-11 advantage.

Dallas Stars forward Denis Gurianov (34) and New York Islanders forward Brock Nelson (29) battle for the puck during the first period of an NHL hockey game Saturday, Dec. 7, 2019, in Dallas. (AP PhotoBrandon Wade)

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New York Islanders forward Anders Lee (27) attempts to screen a shot on goal as Dallas Stars goaltender Ben Bishop (30) and forward Joe Pavelski (16) defend during the second period of an NHL hockey game Saturday, Dec. 7, 2019, in Dallas. (AP PhotoBrandon Wade)

New York Islanders forward Anders Lee (27) attempts to screen a shot on goal as Dallas Stars goaltender Ben Bishop (30) and forward Joe Pavelski (16) defend during the second period of an NHL hockey game Saturday, Dec. 7, 2019, in Dallas. (AP PhotoBrandon Wade)

Dallas Stars forward Corey Perry (10) works between New York Islanders defenseman Nick Leddy (2) and goaltender Thomas Greiss (1) for the puck during the second period of an NHL hockey game Saturday, Dec. 7, 2019, in Dallas. (AP PhotoBrandon Wade)

Dallas Stars forward Corey Perry (10) works between New York Islanders defenseman Nick Leddy (2) and goaltender Thomas Greiss (1) for the puck during the second period of an NHL hockey game Saturday, Dec. 7, 2019, in Dallas. (AP PhotoBrandon Wade)

Mathew Barzal scored for the Islanders, and Thomas Greiss finished with 34 saves.

New York Islanders defenseman Johnny Boychuk (55) looks on as Dallas Stars forward Corey Perry (10) celebrates a goal scored by Alexander Radulov during the first period of an NHL hockey game Saturday, Dec. 7, 2019, in Dallas. (AP PhotoBrandon Wade)

New York Islanders defenseman Johnny Boychuk (55) looks on as Dallas Stars forward Corey Perry (10) celebrates a goal scored by Alexander Radulov during the first period of an NHL hockey game Saturday, Dec. 7, 2019, in Dallas. (AP PhotoBrandon Wade)

Radulov, a healthy scratch for the Stars during their win over Winnipeg on Thursday night, scored on a power play to give Dallas a 2-0 lead with just under four minutes left in the first period.

Gurianov redirected Radulov’s pass to the front of the net past Greiss on another power play 3:12 into the second period.

New York had only two penalties in the game, both to Barzal.

Dallas Stars forward Andrew Cogliano (11) is congratulated by forward Blake Comeau (15) after scoring a goal during the first period of the team's NHL hockey game against the New York Islanders on Saturday, Dec. 7, 2019, in Dallas. (AP PhotoBrandon Wade)

Dallas Stars forward Andrew Cogliano (11) is congratulated by forward Blake Comeau (15) after scoring a goal during the first period of the team's NHL hockey game against the New York Islanders on Saturday, Dec. 7, 2019, in Dallas. (AP PhotoBrandon Wade)

The Stars have scored four goals in seven power-play opportunities in their last two games. They had two power-play goals only twice in their first 28 games but now have improved their season percentage from 15 to 18 percent.

Barzal scored the Islanders’ goal with 4:33 to play, redirecting Devon Toews’ shot from the blue line past Bishop.

The win enabled Dallas to move one point ahead of idle Winnipeg to third place in the Central Division. The Islanders remained second in the Metropolitan Division.

Dallas Stars forward Joe Pavelski (16) screens New York Islanders goaltender Thomas Greiss during the second period of an NHL hockey game Saturday, Dec. 7, 2019, in Dallas. (AP PhotoBrandon Wade)

Dallas Stars forward Joe Pavelski (16) screens New York Islanders goaltender Thomas Greiss during the second period of an NHL hockey game Saturday, Dec. 7, 2019, in Dallas. (AP PhotoBrandon Wade)

New York had the first three shots on goal in the game, including two on the power play, but Dallas came right back with seven straight shots on goal and finished the period with a 16-11 advantage.

Cogliano gave Dallas a 1-0 lead at 11:59 of the first when he tipped in a shot by Jamie Oleksiak from the left faceoff circle.

NOTES: Griess extended the Islanders’ record streak of alternating starts by their goalies to 28 games. ... Cogliano’s goal was his first in 32 games, dating back to March 30 at Vancouver. ... The Islanders have allowed more than one power-play goal only three times this season. ... The Stars’ penalty killers have been successful on all seven opponents’ power plays over the last three games. … The Islanders are 3-4-0 since their 17-game points streak (15-0-2) ended.

Dallas Stars forward Andrew Cogliano (11) deflects the puck past New York Islanders goaltender Thomas Greiss (1) during the first period of an NHL hockey game Saturday, Dec. 7, 2019, in Dallas. (AP PhotoBrandon Wade)

Dallas Stars forward Andrew Cogliano (11) deflects the puck past New York Islanders goaltender Thomas Greiss (1) during the first period of an NHL hockey game Saturday, Dec. 7, 2019, in Dallas. (AP PhotoBrandon Wade)

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Islanders: At Tampa Bay on Monday night in the second of a three-game trip.

Stars: Host New Jersey on Tuesday night in the third of four straight home games.

More AP NHL: www.apnews.com/NHL and www.twitter.com/AP_Sports

Dallas Stars forward Denis Gurianov (34) and New York Islanders forward Brock Nelson (29) battle for the puck during the first period of an NHL hockey game Saturday, Dec. 7, 2019, in Dallas. (AP PhotoBrandon Wade)

Dallas Stars forward Denis Gurianov (34) and New York Islanders forward Brock Nelson (29) battle for the puck during the first period of an NHL hockey game Saturday, Dec. 7, 2019, in Dallas. (AP PhotoBrandon Wade)

New York Islanders forward Anders Lee (27) attempts to screen a shot on goal as Dallas Stars goaltender Ben Bishop (30) and forward Joe Pavelski (16) defend during the second period of an NHL hockey game Saturday, Dec. 7, 2019, in Dallas. (AP PhotoBrandon Wade)

New York Islanders forward Anders Lee (27) attempts to screen a shot on goal as Dallas Stars goaltender Ben Bishop (30) and forward Joe Pavelski (16) defend during the second period of an NHL hockey game Saturday, Dec. 7, 2019, in Dallas. (AP PhotoBrandon Wade)

Dallas Stars forward Corey Perry (10) works between New York Islanders defenseman Nick Leddy (2) and goaltender Thomas Greiss (1) for the puck during the second period of an NHL hockey game Saturday, Dec. 7, 2019, in Dallas. (AP PhotoBrandon Wade)

Dallas Stars forward Corey Perry (10) works between New York Islanders defenseman Nick Leddy (2) and goaltender Thomas Greiss (1) for the puck during the second period of an NHL hockey game Saturday, Dec. 7, 2019, in Dallas. (AP PhotoBrandon Wade)