Kansas City Chiefs' cornerback Julian Battle will miss the upcoming season with a torn left Achilles' tendon. Battle, who was working with the starters because of Eric Warfield's legal problems, was injured during a minicamp practice. "He's going to be operated on," Chiefs coach Dick Vermeil said. "He popped his Achilles' tendon, and he's lost for the year." Battle, a third-round draft pick out of Tennessee in 2003, has played in 26 games for the Chiefs. He made one start last season, as a fifth defensive back.