Mengden, who had right foot surgery on Feb. 8, is scheduled to be out of a walking boot on Mar. 26, Jane Lee of MLB.com reports.
The right-hander remains without a firm timetable for return, but the expectation that he'll shed his walking boot in late March at least provides an approximation of when Mengden will take the next major step in his recovery. The 23-year-old's injury knocked him out of contention for the fifth starter role for the time being, leaving him with an uphill climb once he's fully recovered.