The White Sox will call up Cannon from Triple-A Charlotte to start Tuesday's game against the Royals, Vinnie Duber of AllCHGO.com reports.
The White Sox are electing to give rotation members Erick Fedde and Garrett Crochet some extra rest as Cannon receives what will likely just be a spot start. Cannon, 23, holds a 2.79 ERA and 11:5 K:BB over 9.2 innings in his first two starts with Charlotte this season. The right-hander isn't regarded as a high-level pitching prospect and could be sent back to the minors after Tuesday's outing.