This will be the last in a series of appointments with back specialists for Houck, the Red Sox's closer who was placed on the 15-day injured list Aug. 6. Boston manager Alex Cora believes the club will have a better idea of the right-hander's timetable after the final consultation, and the earliest he can return is Aug. 21. While Houck's unavailable, Garrett Whitlock and John Schreiber have picked up save chances.
