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. Raiders coach Antonio Pierce didn't have an update on O'Connell as of Monday afternoon. He said he wasn't sure whether the Raiders will add another quarterback as it depends on O'Connell's status. "Once we know what's going on with Aidan, I'm sure we're going to have to look at all our options," Pierce said. 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. With no receiver in the vicinity, O'Connell was...