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Capitals' Alexander Semin, left, collides with Philadelphia's Mike Knuble (22) in an April 19 playoff game. ((Nick Wass/Associated Press))

Philadelphia Flyers forward Mike Knuble has recovered from a partially torn left hamstring and will face visiting Montreal in Game 4 of an NHL Eastern Conference semifinal on Wednesday.

Knuble participated in an optional skate Tuesday at the Flyers suburban practice facility and declared himself fit to play Wednesday (CBC, CBCSports.ca, 7 p.m. ET).

But will he get his old job back skating alongside Jeff Carter and Scottie Upshall?

It appears he will, despite the fact fill-in R.J. Umberger has scored four of the Flyers' 10 goals in the series.

"The line of Knuble, Carter and Upshall was really strong going back to the regular season and certainly through the playoffs," said Flyers coach John Stevens. "We'll do whatever we have to do to get a guy like Mike Knuble ready to come back in.

"We have to put him where we feel he'll be most valuable. A guy like R.J., he's such a valuable guy because of his versatility."

Knuble injured himself in the second period of a 3-2 loss to Washington in Game 5 of the Eastern Conference quarter-final on April 19 when he stumbled to the ice in a moment of indecision over whether to try to block a shot.

Knuble was the hero in Game 4 of that series, scoring the winning goal in double overtime.

"I was cleared [Monday] during [Game 3] so I think I can get out there with very little apprehension at all," said Knuble. "The guys are playing well and you just want to come in and not mess up what's going on."

Knuble will probably be most valuable to the Flyers on the power play, where he scored a career-high 15 goals this season.

Stevens noted that Umberger has spent some time on every line this year, playing wing alongside centres Daniel Briere, Mike Richards and Carter, while also playing centre on the fourth line.

"I haven't tried him on defence yet, but he's played just about everywhere else," Stevens said. "Back in training camp when we had him slotted on the fourth line I told him not to worry about where he was playing, just worry about playing."

With files from the Canadian Press