Before the 2010 season began, the Arizona Diamondbacks player development staff got together to create a plan for managing the pitching staff. One of the items on their agenda was to determine workload for their young starting pitching.
At the time they were talking about Ian Kennedy whom they traded for along with Edwin Jackson. Kennedy was coming of an injury and the team hoped to limit his total innings to 180. This allowed him to extend himself but also made sure he was not overworked that could cause future injury.