IRVING, Texas -- Cowboys receiver Terry Glenn went through some drills at practice on Wednesday for the first time all season, a good indication the already dominant Dallas offense could have another weapon by the playoffs.

Glenn, out because of two knee operations, is not expected to play Sunday against the Eagles. He could make his season debut the following Saturday at Carolina or in the finale at Washington. If the Cowboys get a first-round bye, Glenn would have four weeks of practice before the first playoff game.

Glenn was supposed to be quarterback Tony Romo's deep threat until having arthroscopic knee surgery during training camp. He was injured again during his first practice back, leading to a second arthroscopic procedure in September. Dallas has kept him on the roster all season exactly for this scenario -- a return just in time for the playoffs.

"Terry is an anomaly, he's a guy that really can't be covered one-on-one," Romo said. "We're going to see to what extent he comes back, obviously. If it's the old Terry Glenn, this guy is unbelievable."

The Cowboys already have clinched the division title and can wrap up a first-round bye with a win Sunday at home against the Eagles. If Dallas wins and Green Bay loses at St. Louis, the Cowboys also would clinch home-field advantage throughout the NFC playoffs.

Glenn's return to practice had been expected for several days. He's been working out at team headquarters in recent weeks, and on Friday ran routes and caught passes.

Glenn caught 70 passes for 1,047 yards and six touchdowns last season, with his most productive games coming after Romo replaced Drew Bledsoe. So when Glenn went down in the preseason, it was expected to slow the Dallas offense.

The Cowboys have done just fine without him, though, leading the NFC in scoring and total yards, and on pace to set club records in both categories. Still, they're eager to have him back.

"It'll be another guy for defensive teams to contend with," fellow receiver Terrell Owens said. "Everyone knows the impact Terry Glenn (can have) and once he gets out there and gets his feet underneath him, I'm sure he'll be back to his old self."

Copyright 2007 by The Associated Press