Penguins defenseman Paul Martin has only been a minus player once in his eight-year career, so Pittsburgh G.M. Ray Shero and coach Dan Byslma are not worried about his -10 rating. Both men know that Martin is one of the best puck-moving defensemen in the NHL, and they rave about his speed and vision as keys to the Penguins' fourth-ranked penalty kill... . Scouts from at least 20 NHL teams have journeyed to the heartland to watch 6'8" defenseman Andrej Sustr, a 20-year-old Czech-born sophomore at Nebraska-Omaha. Slow to develop, he went untouched through three drafts, which means he is now an unrestricted free agent. His role model is 6'9" Bruins captain Zdeno Chara, though most scouts feel Sustr will be less of a developmental project than Chara.