Walker (knee) is throwing off a mound and going through a running program as he returns from a debridement procedure on his right knee in January, Mike Puma of the New York Post reports.
Manager Buck Showalter said earlier in the day there's a chance the 29-year-old is ready for the first turn through the rotation, and there's now a better idea of where Walker currently stands in his rehab program. The right-hander will continue the mound work and running progression until receiving clearance to further ramp up his rehab.