The Lightning have acquired goaltender Dwayne Roloson from the Islanders in exchange for defenseman Ty Wishart tonight, Vice President and GM Steve Yzerman announced. ?In this trade we give up a promising, former first-round pick. We wish him luck in the Islanders organization,? Yzerman said. ?In Roloson we have acquired a proven, veteran goaltender who will provide stability in net.? Roloson has played in 20 games with the Islanders this season, posting a 6-13-1 record, a .916 save percentage and a 2.64 goals-against average. He leads all New York goaltenders each category as well as games played.