Sims, 23, has a 3.94 ERA and 81:29 K:BB in 80 innings for Triple-A Gwinnett.
Once a highly touted phenom, Sims is now an afterthought in the stocked Braves farm system. Still, opposing batters are hitting just .224 against him in 2017, and he is fanning more than a batter per inning. A red flag is that he's allowed a staggering 14 home runs this season, which is tied for second most in the International League. Nevertheless, with Sean Newcomb now in the big leagues, Sims could be the next man up for Atlanta.