Las Vegas Raiders quarterback Aidan O'Connell is expected to miss four to six weeks with a broken thumb on his right (throwing hand), sources told ESPN's Adam Schefter on Monday.
O'Connell, who was wearing a heavily wrapped splint on the thumb after Sunday's 20-15 loss to the Los Angeles Rams, will undergo more tests Monday.
The quarterback said Sunday he suffered a similar-feeling injury in middle school.
It was during the Raiders' second offensive series of the day when, on second-and-10, O'Connell attempted a deep pass to the right side and was hit on his follow-through by Rams safety Kamren Curl.