Kelly was added to the Brewers' 60-man roster Thursday.
Kelly was selected in the second round of the 2019 first-year player draft and posted a 2.84 ERA and 1.11 WHIP with a 45:9 K:BB over 31.2 innings in the minors last year. After a strong showing in 2019, the southpaw will get the chance to develop at the Brewers' alternate training site this season among some of the team's top prospects.