Cowboys' receiver Terry Glenn went through some drills at practice for the first time all season Wednesday, 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 regular-season 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 Tony Romo's deep threat until having arthroscopic surgery on his right knee during training camp. He was hurt again in his first practice back, leading to a second arthroscopic procedure in September. It wasn't a typical scope, though, which is why he's been so slow to return. At the time, he was also considering season-ending microfracture surgery. Dallas has kept him on the roster all season exactly for this scenario -- a return just in time for the playoffs.