Details: A source told ESPN that Garoppolo underwent surgery on his left foot after signing with the Raiders in March.

• The 31-year-old injured the foot in Week 13 last season and did not return.

Timeline: Coach Josh McDaniels, who refused to confirm the surgery, admitted that Garoppolo could be out until the start of training camp.

QB Depth: 38-year-old Brian Hoyer and rookie fourth-rounder Aidan O’Connell will see increased reps for the time being.

More Raiders News:

• Davante Adams downplayed his recent comments criticizing the Raiders’ organization.
• Hunter Renfrow — who has been the subject of trade speculation — is not practicing for undisclosed reasons.