Red Sox manager Alex Cora said that Whitlock (oblique) could return from the 15-day injured list if all goes well in his rehab start Wednesday with Triple-A Worcester, Gabrielle Starr of the Boston Herald reports.
Whitlock has missed nearly a month with a left oblique strain, but the Red Sox apparently feel that he should be sufficiently built up after just the one rehab start. Cooper Criswell has performed well since joining Boston's rotation, but he could be headed to the bullpen or back to Worcester once Whitlock is activated.