Losing their last six games has taken an obvious mental toll on everyone in the Rangers' organization, but it might be hardest for Vinny Prospal.

Not because the 35-year-old forward has been particularly to blame for the Rangers' woes, but because he still hasn't played in a victory this season. Prospal missed the Rangers' first 53 games after undergoing knee surgery in October, and returned for the third game of their season-worst 0-5-1 skid, scoring a power-play goal in the Blueshirts' 3-2 loss to the Devils on Feb. 3.

"Obviously, whoever comes back, you want to come in and be on a winning streak, not on a losing streak," Prospal said after the Rangers practiced Saturday in Greenburgh in preparation for Sunday's Garden matinee against the Penguins. "I just hope that we win (today). Just get out of this, get it over with and start feeling good about ourselves, because our overall play has been there. The offense is what's holding us back from winning and getting points."

Sunday, Prospal will move from wing to center, between the Rangers' top scorers of last season, Marian Gaborik, and this season, Brandon Dubinsky. But the shuffle, which sends previous top-line center Erik Christensen to the fourth line, is not just about generating more offense for a team that has scored 16 goals in nine games and is in the midst of its worst slump since losing seven straight in December 2006.