Just a couple plays in to Friday’s preseason game against the Miami Dolphins, Atlanta Falcons safety DeMarcco Hellams left the game on a cart. The trainers also placed an air cast on his left leg before he headed to the locker room. Hellams got hurt on the second play from scrimmage Friday night. His injury is the second significant one for the Falcons after Rondale Moore suffered a season-ending knee injury in practice this week. Hellams is gearing up for his second season in Atlanta after the Falcons selected him in the seventh round of the 2023 NFL Draft out of Alabama. He’s coming off a st…