He became a member of the Rochester Rattlers in 2011, when the Chicago Machine's roster was transferred. Bice had a very productive season in Rochester with 25 ground balls, a goal, and an assist in only 11 games. A year later, in 2012, with the resurrection of the Machine name in Columbus, Ohio, the Rattlers traded Bice and two other Ohio State alumni to the Ohio Machine for draft picks. Greg has played two seasons, as captain, with the Ohio Machine and plays an integral leadership role both on and off the field. Bice had a terrific 2012 season, grabbing 28 ground balls, netting 2 goals, and dishing out an assist. Unfortunately, his 2013 season was cut short due to an injury.