The Astros cleared some space on their 40-man roster Wednesday, outrighting four players to Triple-A Round Rock. …Dave Borkowski, Jack Cassel, Ryan Houston and Jose Castillo … The Astros’ roster now stands at 36.
Borkowski and Castillo have the right to refuse the outright assignments and become free agents, while Cassel and Houston automatically become Minor League free agents …
[Assistant general manager Dave Gottfried] talked to all four,” Wade said. “He indicated as we go forward here and try to review where we are, we’ll see if there’s potential to be back in touch with them. All four, at different times, helped our ballclub.” Link