Philadelphia, PA -- (Sports Network) - Struggling to get into the postseason, the Philadelphia Flyers learned on Monday that defenseman Derian Hatcher will be out for the season with a fractured right tibia and forward R.J. Umberger will miss the next two weeks with a sprained MCL.

Hatcher was hurt with 12:07 left in the first period of Saturday's 3-2 overtime loss to Boston while blocking a slap shot by Bruins forward Andrew Ference. Hatcher was helped off the ice and did not return.

The right leg was broken just above the ankle and was placed in a cast on Saturday. It is possible he might return to play if the Flyers make the postseason.

Hatcher, who recently came back to play after missing three weeks with a sore right knee, has two goals and five assists in 44 games this season.

Umberger was injured during a 7-1 rout at the hands of the Pittsburgh Penguins on Sunday.

He has 12 goals and 37 assists in 71 games this season.

The Flyers currently hold the eighth seed in the Eastern Conference and are one point ahead of Buffalo and two points in front of Washington and Florida.