Dennis Georgatos, of MediaNews, reports the following regarding the San Francisco 49ers:

OL Adam Snyder (biceps) is out for the team's preseason game Sunday, Aug. 20.

LB Renauld Williams (ankle) is out for the team's preseason game Sunday, Aug. 20.

CB B.J. Tucker (ankle) returned to practice Friday, Aug. 18.

TE Eric Johnson (hip) returned to practice Friday, Aug. 18.

QB Trent Dilfer will likely enter the preseason game Sunday, Aug. 20, versus the Oakland Raiders, in the second quarter.

Raider starters to play at least one half Sunday

Jerry McDonald, of ANG Newspapers, reports Oakland Raiders head coach Art Shell will play his starters for at least one half Sunday, Aug. 20, versus the San Francisco 49ers.

Information from KFFL.com