The Denver Broncos are working toward their preseason opener against the Atlanta Falcons, and saw an encouraging sign from starting running back J.K. Dobbins. Dobbins is one of several Broncos players who exited practice early or did not participate at all on Monday. J.K. Dobbins Returns to Broncos Training Camp PracticeBroncos head coach Sean Payton downplayed Dobbins’ departure from Monday’s session, noting that they were being precautious with the veteran running back amid a slew of soft-tissue injuries to skill players and linemen. Broncos Still Banged Up at Wide ReceiverIn addition to Dobbins, the Broncos also got wide receiver Marvin Mims Jr. back at practice in camp. Mims exited practice early after pulling up during a route.