Kirby came out of The University of Virginia and once projected as a potential top-five pick in the 2015 MLB Draft. He fell to the Brewers at No. 40 in Competitive Balance Round A after missing a significant portion of the collegiate season with a muscle strain behind his left shoulder. He returned to close out the College World Series for national champion Virginia and reportedly had a deal to sign with the Brewers for above the $1.548 million slot value assigned that pick.
But a new, undisclosed medical concern delayed the deal, and Kirby eventually signed on July 17 for $1.25 million. Kirby went 0-1 with a 5.68 ERA in five games, two starts, for Wisconsin before being shut down with the injury.
Another top 30 prospect, right-hander Taylor Williams (No. 17) is the only pitcher in Milwaukee's system to undergo Tommy John surgery so far this year.
Adam McCalvy is a reporter for MLB.com. Follow him on
Twitter @AdamMcCalvy, like him on Facebook and listen to his podcast. This story was not subject to the approval of Major League Baseball or its clubs.