The Kansas City Chiefs announced Saturday night that quarterback Matt Cassel is out for Sunday's game against the San Diego Chargers.

The Chiefs said Cassel, who underwent an emergency appendectomy Wednesday, didn't make the trip to San Diego. He had been listed as doubtful but didn't practice Thursday and Friday.

Brodie Croyle will start against the Chargers. His record as a starter is 0-9.

John Clayton is a senior writer for ESPN.com.