Horvat scored a power-play goal on three shots in Saturday's 4-3 shootout win over the Canadiens.
Horvat's goal opened the scoring at 14:32 of the first period. Through five games, Horvat has three points, 16 shots on net, three hits and a plus-2 rating. The center is locked in on the first line, though the potential absence of Anthony Duclair (leg) could have a ripple effect through the Islanders' lineup.