PITTSBURGH - As the Flyers had suspected, defenseman

Derian Hatcher

suffered a fractured right leg Saturday in a 3-2 loss in Boston. He will miss the rest of the regular season.

"He has a small nondisplaced fracture of the tibia and a very severe contusion," general manager Paul Holmgren. "He's probably going to be out a month."

Hatcher was hit by a shot by the Bruins' Andrew Ference in the opening period. Another Flyers defenseman, Randy Jones, missed both games this weekend with a hip flexor.

Winger R.J. Umberger, who has 37 assists and has been a strong addition to Danny Briere's line, suffered a sprained left knee in yesterday's 7-1 loss to the Pittsburgh Penguins. Umberger banged knees with Penguins defenseman Brooks Orpik in the second period.

"The knee is sore but I'll take a couple of weeks and see what happens," said Umberger, who is expected to be sidelined for at least two weeks.

"It's disappointing more than anything. It's hard to say, with swelling and inflammation. I never had a knee injury before."

Loose pucks

Scottie Upshall

was a healthy scratch, while

Jim Dowd,

who was scratched in Boston, was back in the lineup. It was the first time this season that Upshall was a healthy scratch.

- Tim Panaccio