Detroit Lions wide receiver Calvin Johnson missed practice Wednesday with a foot injury, according to the team's injury report.

Johnson had six catches for 111 yards in Sunday' season-opening win over the St. Louis Rams and did not appear to suffer an injury.

The Lions visit the San Francisco 49ers on Sunday.

Cornerback Bill Bentley (concussion), safety Louis Delmas (knee), defensive end Lawrence Jackson (calf) and linebacker Travis Lewis (quad) were also held out of practice Wednesday, while cornerback Chris Houston (ankle) and defensive tackle Corey Williams (knee) participated in a limited role.