KANSAS CITY, Mo. (AP) — The Super Bowl champion Kansas City Chiefs began the intake process for first-year players Monday after the NFL gave them the go-ahead along with the Houston Texans, their opponent in the season opener Sept. 10. But it could be quite a while before they get on the field for training camp. All players must test negative twice before they are admitted to the facility, then they will spend a couple of days doing the more routine physicals and getting their equipment sorted out. Veterans are due July 28, and coach Andy Reid said it could be 10 days after that before full practices begin.