The Chicago White Sox era of prospects is well underway, as the team's sixth-ranked farmhand, Reynaldo Lopez, has been promoted to the starting rotation and will make his first start with his new team Friday against the Kansas City Royals.

Lopez's move to the rotation comes at the expense of Mike Pelfrey, who will transition to the bullpen. The 33-year-old Pelfrey has a 5.31 ERA and 6.07 FIP over 95 innings this season with the White Sox.