OWINGS MILLS — The Ravens got some good news when left tackle Ronnie Stanley was back at practice Wednesday after leaving the game against Jacksonville in concussion protocol.

Safety Marcus Williams also was able to practice after injuring his groin Sunday night.

Key players were missing, however, during media availability.

Right tackle Morgan Moses and cornerbacks Jalyn Armour-Davis and Ronald Darby did not appear to be practicing. Armour-Davis also left Sunday night’s game in the concussion protocol.

In addition, the Ravens were shorthanded at wide receiver with both Odell Beckham Jr. and Zay Flowers not at practice during the media viewing.

However, coach John Harbaugh did express optimism that Flowers could be available for the game against the 49ers.

The Ravens play the 49ers on Monday night, so both teams’ official injury reports will not be released until Wednesday.

The Ravens are 5 1/2-point underdogs against San Francisco.