ALAMEDA, Calif. — The Oakland Raiders had something more meaningful to celebrate on Monday than their first win under a new regime.

Wide receiver Darrius Heyward-Bey was released from the hospital a day after being knocked out by a helmet-to-helmet hit and is expected to make a full recovery.

Heyward-Bey suffered a concussion and a strained neck on the scary hit from Pittsburgh safety Ryan Mundy that stopped the game Sunday for more than 10 minutes as Heyward-Bey had to regain consciousness before being carted off the field and taken to the hospital.

There was no penalty called on the play by the replacement officials.

Heyward-Bey spent the night in the hospital for observation and went home Monday, where he is resting. Coach Dennis Allen said Heyward-Bey sounded tired when he talked with him and there is no word on when he will be cleared to return to the field.

“The concussion is obviously the bigger issue,” Allen said. “He’s a guy that we’re going to have to continue to evaluate and see where he’s at. We were all pleased to see that it wasn’t anything severe as far as neck injury or anything like that.”