ST. JOSEPH, Mo. (AP) — Pro Bowl running back Jamaal Charles remained sidelined by a strained right foot and will likely miss the Kansas City Chiefs’ preseason game Friday night against San Francisco. Charles left the practice field on Monday and speculation ran rampant that the injury was serious. X-rays came back negative and the Chiefs still consider him day to day.

The Chiefs practiced only in shells for the final time at Missouri Western on Wednesday before moving their base back to Kansas City next week. They will hold a closed walk-through on Thursday before playing the 49ers at Arrowhead Stadium. The only other notable absence at practice was linebacker Akeem Jordan. Chiefs coach Andy Reid said that he had a personal matter but would rejoin the team today (Thursday).

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The Kansas City Chiefs waived linebacker Chad Kilgore and signed cornerback Kennard Cox prior to their final practice Wednesday on the campus of Missouri Western State University. Kilgore, who played at nearby Northwest Missouri State, spent time in training camp with the Raiders last season. He played high school football in Excelsior Springs, Mo.

A longshot to make the team, he was waived to clear space for Cox, who has played 29 games in four NFL seasons spent with Jacksonville and Seattle. The former seventh-round pick has also spent time with the Bills and Packers earlier in his career.

The Chiefs play their second preseason game Friday night at Arrowhead Stadium. They resume training camp at their own practice facility next week.