Sundstrom lifts Islanders over Senators, 5-2
Kyle Okposo, Sundstrom and Justin Johnson gave the Islanders a 3-0 lead after the first period. Sundstrom added his second goal in the middle period and John Tavares scored in the third for the Islanders.
Robin Lehner stopped 33 shots for the Senators.
The two clubs also played a split-squad game in Ottawa on Sunday night.