Waller (hamstring) returned to practice Wednesday, Tashan Reed of The Athletic reports.
Waller had been held out of practice the past two-plus weeks with a hamstring issue that Adam Schefter of ESPN previously noted wasn't considered serious. Now that he's back on the field, the Raiders' clear-cut top tight end will have an opportunity to re-establish his key role in a passing offense that added star wideout Davante Adams to the mix this offseason.