The St. Louis Rams and the Kansas City Chiefs will battle tonight in the final preseason game of the summer for both squads. The Chiefs are expected to play their starters for the entire first half in this one while the Rams will rest several starters including QB Kurt Warner, CB Aeneas Williams and LB Mark Fields. The Chiefs are 2-1 this preseason, the Rams 2-2. The game will be worked by replacement officials after the NFL locked out the regular officials in a contract dispute.