The sixth-year senior has seen his fair share of football and has shown continued improvement over the last three years. He plays with good quickness and is athletic in his lower body but needs to play under control. He's capable of setting out to rush speed or getting to lateral landmarks as a run blocker. Greenfield has a tendency to play with arbitrary footwork as both a run and pass blocker, which curtails his contact balance and consistency to sustain. He'll need to improve his core strength and protection technique to play in the NFL, but he has enough talent and athletic ability to compete for a backup role.
