Waller (knee) isn't practicing Wednesday, Tashan Reed of The Athletic reports.
Waller's absence to begin Week 13 prep was fully expected one day after interim coach Rich Bisaccia referred to the tight end as week-to-week. Unless he's able to get back on the field in some capacity by Friday, Waller isn't looking like a good bet to play in the Raiders' game against Washington this Sunday. Backup tight end Foster Moreau caught only one of five targets for three yards in the team's Thanksgiving Day win over Dallas, but he put up a 6-60-1 receiving line while playing 100 percent of the snaps back in Week 7 when Waller missed a game against the Eagles with an ankle injury.