Pittsburgh Penguins forward Marc Staal is expected to miss Saturday's game against the visiting New Jersey Devils with a knee injury.Staal was injured on a knee-on-knee hit from New York Rangers veteran Mike Rupp on Friday night. The extent of the injury isn't known."At this point in time it’s too early to tell the significance of the
injury," Penguins head coach Dan Bylsma told reporters Saturday. "Maybe in the next few days we’ll have an update on what the
timetable will be for that."The loss of Staal long-term would be a major blow to a Penguins team already without forward Sidney Crosby and defenseman Kris Letang, both of whom are dealing with concussion symptoms.Staal, 23, has 15 goals and six assists in 34 games.