Castro (shoulder) won't begin throwing from a mound for about a week, Max Goodman of SI.com reports.
Castro recently began playing catch and throwing on the field, but he isn't quite ready to resume work from the mound. The righty reliever is recovering from a right shoulder strain and last saw game action July 10. Castro is on the 60-day IL, so he won't be able to return to the Yankees until Sept. 9.