Williams, 24, was signed out of the independent Frontier League in 2011 and was part of a combined no-hitter for Class A Wisconsin in 2012. This season he had a 1.86 ERA and 10 saves in 24 relief appearances between Wisconsin and Brevard County.
Adam McCalvy is a reporter for MLB.com. Read his blog, Brew Beat, and follow him on Twitter at @AdamMcCalvy. Teddy Cahill is a reporter for MLB.com. Follow him on Twitter at @tedcahill. This story was not subject to the approval of Major League Baseball or its clubs.