Whitlock's scheduled start against the Rays on Friday has been postponed due to inclement weather.
The game has been rescheduled for Monday at 4:05 p.m. EDT, when both Tampa Bay and Boston had scheduled off days. The two clubs will already be playing in a makeup doubleheader Saturday. Whitlock will have his start moved back a day, but it's unclear whether he'll take the mound for the first or second game of Saturday's twin bill.