CowboysDallas Cowboys Rookie Mini Camp Last Session Before Meeting The Veterans For OTA’S by Vernon HadnotMay 13, 2023May 13, 2023 Share0 FRISCO, TEXAS — Dallas Cowboys rookie mini camp has it’s last session before meeting with veterans for OTA’S. Cowboys Rookie LB DeMarvion Overshown on rookie minicamp practice: “I’m excited. Today was a good day.”