Keys, 23, won the Florida State League batting title with a .346 average (132-for-381) in 95 games at Class A Jupiter.
DeSclafani, 23, combined for a 9-6 record with a 2.65 ERA (129.0 IP/38 ER) in Class A Jupiter and Double-A Jacksonville.
Joe Frisaro is a reporter for MLB.com. He writes a blog, called The Fish Pond. Follow him on Twitter