Chiefs signed LB Zac Diles, formerly of the Titans, to a one-year contract. Diles, 28 in June, spent his first four years with the Texans, but he has bounced around since. He's been with the Rams, Bucs, Colts, and Titans over the last two seasons. Diles made 11 tackles for Tennessee before breaking his leg in Week 7 last season. He'll try to earn a backup inside linebacker spot.