Whitlock threw a 25-pitch bullpen session Friday following a week of downtime, Jen McCaffrey of The Athletic reports.
As part of the rehab plan this offseason to bring Whitlock back from an internal brace procedure, the Red Sox introduced the concept of what was coined a "de-load" week. The right-hander would throw normal bullpens, then get a week off. Red Sox manager Alex Cora said this most recent de-load was the last one. If healthy, Whitlock should serve in a high-leverage bullpen role, including save opportunities.