Travis Hamonic left MTS Centre in his native Winnipeg in a walking boot. Where that leaves the Islanders' defense, beginning Tuesday night against the Penguins, is a giant question mark. Hamonic suffered a sprained ankle in the third period of the Isles' 5-4 overtime loss to the Jets on Sunday night. It forced him to miss the final six minutes of regulation and the 1:59 of OT before Evander Kane knocked in the winner. It appears that the defenseman avoided a serious sprain -- Jack Capuano said Hamonic will be evaluated Tuesday morning -- but it appears Hamonic will miss at least Tuesday's game against Sidney Crosby and the Penguins and possibly more. "If he can't go, that's obviously a big part of our 'D' corps," said Andrew MacDonald, Hamonic's regular partner. The pair would have tried to match against Crosby or Evgeni Malkin Tuesday night. Now it might be MacDonald and Radek Martinek, the 11-year veteran who has yet to play a game this season after signing with the Islanders just before training camp. "We have some pretty good depth here," MacDonald said. "Radek's played in all different situations in the past, so he'll know what to do when he's in there."