ST. JOSEPH, Mo. (AP) — Chiefs starting cornerback Jaylen Watson was placed in the concussion protocol and backup safety Deon Bush lost for the season to a ruptured Achilles tendon in what proved to be a costly first preseason game for the Kansas City defensive backfield.

Watson missed most of the 2024 regular season after breaking his tibia and fibula in a Week 7 win at San Francisco. But after undergoing surgery, the fourth-year pro managed to make it back in time to help the Chiefs on their playoff run.

Bush has appeared in 24 games over the past three seasons in Kansas City. He spent his first six years in the NFL in Chicago.

In other injury news, defensive end Janarius Robinson — who'd been having a good camp as he tried to make the roster — broke his foot during the preseason opene

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