Mattias Ohlund and Martin Havlat both done for the season

Both Havlat and Ohlund undergo season ending surgery.

links are listed below.

http://blackhawks.nhl.com/team/app?articleid=356829&page=NewsPage&service=page

http://www.nhl.com/nhl/app?articleid=356817&page=NewsPage&service=page