Toussaint was called up to Double-A Mississippi on Thursday, Keith Law of ESPN reports.
Toussaint has been with High-A Florida since the beginning of this season, accumulating a 5.04 ERA and 1.36 WHIP over the course of 19 starts. During 105.1 innings the right-hander struck out 123 batters, but was plagued by a rough .349 BABIP, which resulted in a 3-9 record and a rocky ERA by his standards. The key for Toussaint has come with an improved sense of command, walking just 3.6 hitters per nine innings as opposed to the 4.8 BB/9 he posted last season with Low-A Rome, and he's been even better recently, striking out 19 without walking a batter in his final two starts for Florida before his promotion. He will still have to continue to work on diminishing his walk rate with Mississippi, but his propensity to amass strikeouts gives the 21-year-old plenty of upside moving forward.