Middle linebacker Rolando McClain was on the field but not participating in practice because of a foot injury Friday, raising the possibility that Ricky Brown could wind up being the starter against San Diego.
Not present was cornerback Chris Johnson, who looks to be out with a groin injury.
Defensive tackle Richard Seymour (knee), wide receiver Chaz Schilens (foot, knee) and cornerback Nnamdi Asomugha (ankle) all appeared to be participating in practice.
More to come later . . .