Waller (knee/back) was spotted working out with athletic trainers off to the side of Thursday's practice, Adam Hill of the Las Vegas Review-Journal reports.
While the activity seemingly marks a step forward for Waller in his recovery from the strained knee he suffered in the Raiders' Thanksgiving Day win over the Browns, he still looks destined to go down as a non-participant on the team's final Week 15 injury report. If that's the case, Waller will likely take an "out" or "doubtful" tag into Saturday's game in Cleveland, almost certainly resulting in him missing a third consecutive contest. Foster Moreau (abdomen) has logged heavily snap shares in place of Waller the past two games and has collected nine targets along the way, but slot maven Hunter Renfrow (22-219-1 receiving line on 24 targets) has arguably benefited more from the absence of the star tight end.