Sports NFL tells teams training camps will begin July 28, with rookies reporting on July 21 July 18, 2020July 18, 2020 Chris Bumbaca, USA TODAY Comments Off on NFL tells teams training camps will begin July 28, with rookies reporting on July 21 In a letter to the league's GMs and coaches, the NFL outlined the reporting dates for later this month. Rookies may report July 21 and others July 28.