EAST MEADOW, N.Y. — Oliver Wahlstrom joked that his summer began back in December when he went down with a season-ending knee injury after getting tangled up with Pittsburgh Penguins defenseman Pierre-Olivier Joseph.  “I’m super excited to skate,” Wahlstrom, who is still on the recovery trail, said during his exit interview. “It’s going to be awesome. … Continue reading Oliver Wahlstrom wants to evolve into ‘power forward’ for Islanders in ’23-24