Groin injury sidelines Islanders' Ullstrom 3-4 weeks

The New York Islanders announced Friday that forward David Ullstrom has a groin injury that is expected to sideline him for 3-4 weeks.

Ullstrom has two goals and five points in 20 games this season. He posted four goals and eight points in 29 games during his rookie season in 2011-12.

According to Islanders coach Jack Capuano, forwards Jesse Joensuu and Colin McDonald are questionable for Saturday's game at the Florida Panthers.