Williams will require Tommy John surgery on his injured elbow and will miss the entire 2017 season, Jim Callis of MLB.com reports.
Williams underwent multiple examinations after injuring his elbow earlier in March, and the decision was ultimately made to send him under the knife. Williams is one of the Brewers' top pitching prospects, but he will need at least a year to recover from his procedure, so he will now be forced to turn his attention to 2018.