New York Islanders defenseman Radek Martinek will be out four to six weeks because of an unidentified upper-body injury sustained during a game last weekend, the club said Tuesday.Martinek was knocked out of the Islanders' home opener in the first period Saturday night after he absorbed a hard hit behind the net. He was evaluated by doctors that night and didn't play in New York's 7-1 loss to Buffalo on Monday. Source: NHL
