Sims received an invite to the Braves' major league spring training Thursday.
Sims had some ups-and-downs in the Gulf and Carolina Leagues in 2015 before settling into a groove at Double-A Mississippi. In nine starts at Double-A Mississippi, Sims worked a 3.21 ERA with 56 strikeouts, 29 walks, and a 10.6 K/9 rate. He'll join a number of other top Braves prospects in spring training but he's likely to start the season in the minors.