Ottawa scored four second-period goals.
Neil opened the scoring 28 seconds into the period with a shot from the slot that barely crossed the line after goalie Yann Danis got a piece of the puck.
Kuba scored his third of the season at 9:14, and Fisher and Heatley scored 37 seconds. Fisher used a chip shot to score at 13:06, and Heatley snapped home a shot from the top of the circle at 13:43.
Danis made 21 saves.
Notes: Islanders center Doug Weight missed his 17th straight game because off a knee injury. ... The Islanders are off until Wednesday when they host Minnesota. ... Ottawa's Mike Comrie missed a chance to suit up against his former teammates, He sat out his third straight game with the flu. ... Chris Neil played in his 500th NHL game Saturday, all with the Senators.
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