KANSAS CITY, Mo. (AP) Chiefs defensive end Frank Clark strained his hamstring and cornerback Charvarius Ward strained his quad in practice this week, leaving the status of both in doubt for their game against the Los Angeles Chargers this weekend.

Clark missed most of training camp, all three preseason games and the Chiefs' opener against the Browns with a strained hamstring. But coach Andy Reid said Friday that this injury is to the other hamstring, and that the original injury was fully healed when Clark took the field for last Sunday night's loss to Baltimore.

"It's a different one," Reid acknowledged. "He was healed. We don't put guys out there if you can't go."