DENVER - Nathan MacKinnon scored 4 : 43 into overtime .
The Colorado Avalanche beat the New York Islanders 2 - 1 on Friday night for their first win at home in more than seven weeks .
DENVER - Nathan MacKinnon scored 4 : 43 into overtime , and the Colorado Avalanche beat the New York Islanders 2 - 1 on Friday night for their first win at home in more than seven weeks .