ENGLEWOOD, Colo. — Tight end Bug Howard was carted off the field Thursday after suffering an injury during red-zone drills.

"Howard hurt his ankle there," Head Coach Vic Fangio said after practice. "I think it's just a sprain at this point, but not sure."

Fangio said tackle Jake Rodgers suffered a "little bit of a calf injury" during Thursday's practice. Rodgers exited practice, as well.

Wide receiver DaeSean Hamilton missed Thursday's session after suffering a hamstring injury during Wednesday's practice.

"[The injury is] not as bad as it could have been," Fangio said. "He woke up feeling better today. [I'm] encouraged that it will be short rather than long, but you know how those hamstrings can go."

Tight end Jake Butt missed his fourth consecutive practice, while linebacker Todd Davis and wide receiver River Cracraft also remained out.

Rookie wide receiver Juwann Winfree, though, returned to practice after missing Monday and Wednesday.