It's typically the final phase before doing personal workouts or meetings with select National Football League teams.
With an injury so close to the Draft (approximately a month away) Jones could fall as far as the fourth or fifth round depending on the severity of his injury.
Some really bad news out of Washington's pro day on Saturday. It came on the final defensive back drill of the day. It's unknown how severe the injury is at this time.
Washington CB Sidney Jones, one of the top corners in the 2017 NFl draft, appeared to suffer a torn Achilles on Saturday.
Mike Mayock: No 'official' talk with Redskins on GM job
But if Mayock does become Washington's GM, he wouldn't be the first to make the jump from the broadcast booth to the front office. He has broadcasted CFL, NFL and college football games, and now serves as one of the NFL Network's draft experts.
On NFL scout, speaking to NFLDraftScout.com on the condition of anonymity, said, "In 18 years of attending pro days, I've never seen a serious injury sustained during one of these workouts".
Ross, another consensus first-round prospect who ran a combine-record 4.22-second 40-yard dash in Indy, wanted to show teams he was more than simply a deep threat by running a number of routes.
Jones has been compared to Marcus Peters because of his coverage ability, as well as his instincts and ball skills.