The Chargers could be without starting strong safety Terrence Kiel on Sunday night when facing the visiting Oakland Raiders. Kiel has been bothered by a sprained right ankle and it caused him trouble again in Sunday's overtime win over the Washington Redskins. "I just aggravated it again," said Kiel, who didn't practice Friday. "I might play; I haven't really made a decision whether I'm going to play this game or not." Kiel is third among Chargers with 50 tackles, with a sack and a forced fumble. If he can't go, third-year pro Clinton Hart would replace him as the Chargers try to win their fifth straight overall.