Tolle had a start skipped at Triple-A Worcester over the weekend as part of a contingency plan for the Red Sox, who may need to call him up for a spot start this week, Chris Cotillo of MassLive.com reports.
The Red Sox didn't need to call up Tolle for their recent four-game set versus the Tigers, but he could be needed as a potential replacement in the rotation for Sonny Gray, who is expected to land on the 15-day injured list after suffering a hamstring injury during his start in Monday's 8-6 win over Detroit. Tolle is the logical candidate to replace Gray, who's next turn through the rotation was set for Saturday in Baltimore.