Waller has been missing time in training camp due to a hamstring injury, Adam Schefter of ESPN reports.

EDGE Analysis

Schefter notes that the tight end's hamstring issue is not considered serious, while Paul Gutierrez of ESPN.com relays that it appears as though Waller could return to practice next week. With that in mind, it seems safe to assume that Waller won't be available for Sunday's preseason contest against the Vikings.