The team quickly ruled him out for the remainder of the game with a neck injury.
Conley was attempting a tackle on Broncos running back Royce Freeman along the sideline when Raiders teammate Johnathan Abram attempted a tackle on the RB. Abram hit Freeman with his helmet, but the safety's leg inadvertently hit Conley right on the top of his helmet as the CB was on the ground. Conley laid on the field for around 10 minutes, as trainers attended to him. He left the field on a backboard and gave a thumbs up to the crowd upon departing.
Raiders coach Jon Gruden said following the game that Conley's injury is not as serious as it looked.
"I got good word on him that he is going to be OK," Gruden told reporters. "I don't know his status for the next game but, most importantly, the kid is alright. That was a scary hit that he took, but all the reports that I have are very, very positive."
NFL Network's Tom Pelissero reported Tuesday morning that Conley has been released from the hospital.
Gurden told reporters Tuesday that he would have more news on Conley's status Wednesday.
"Happy to say that Gareon Conley seems to be doing OK," Gruden said. "I think there is a chance he might be able to play this week. But we will have to update his status tomorrow."
Abram was called for a personal foul on the play for initiating contact with Freeman with his helmet.
A first-round pick in 2017, Conley missed most of his rookie season with a shin injury, but played in 15 games last year, recording 37 tackles, 15 passes defensed and three interceptions.