Raiders interim head coach Rich Bisaccia said Monday that Waller (knee) is considered "week-to-week," Paul Gutierrez of ESPN.com. "I know Waller improved the first day [after suffering the knee injury Thanksgiving Day] and now we'll see how the rest of the week goes," Bisaccia said.
Bisaccia isn't closing the door on Waller suiting up this weekend against Washington, but the fact that the tight end is being labeled as week-to-week suggests he's likely trending toward his second absence of the season. Waller was diagnosed with a strained knee after exiting in the first half of the Raiders' 36-33 overtime win over the Cowboys last Thursday, playing just 22 percent of the offensive snaps while hauling in two of five targets for 33 yards. Foster Moreau would be in line to start at tight end and take on a heavy snap share Week 13 in the likely event Waller is inactive for the contest.