SANTA CLARA, Calif. -- While Pro Bowl tight end Vernon Davis has not practiced this week, he is maintaining hope he will be able play Sunday for the San Francisco 49ers against the Kansas City Chiefs.

"I'm not sure," he said Friday. "I'll know tomorrow. Still healing. Small chance."

Also, nose tackle Ian Williams was an add to the 49ers' injury report as he sat out practice with an ankle issue. Plus, backup Tony Jerod-Eddie wore the blue non-contact jersey all week.

Following is the 49ers' status report for Sunday's home game against the Kansas City Chiefs:

DOUBTFUL: C Marcus Martin (knee)

QUESTIONABLE: CB Tramaine Brock (toe), RT Anthony Davis (knee, ankle), TE Vernon Davis (back), TE Vance McDonald (knee), S Eric Reid (hamstring), DT Ian Williams (ankle)

PROBABLE: SS Antoine Bethea (ankle), WR Michael Crabtree (foot), RB Frank Gore (back), DE Tony Jerod-Eddie (shoulder), P Andy Lee (right ankle), DL Justin Smith (not injury related)