In 145 total innings pitched between Florida and Mississippi, he pitched to a 6–13 record with a 4.53 ERA along with 167 strikeouts. Toussaint began 2017 with the Florida Fire Frogs and was promoted to the Mississippi Braves in late July 2017, making his Southern League debut on July 31 against the Mobile BayBears. He struggled to begin the season, but improved after making adjustments to his pitching delivery. Not throwing his curveball gave Toussaint time to improve his changeup, which became a viable third pitch over the course of the season. The rocky season was attributed to the Diamondbacks' request Toussaint cut down on the use of his curveball, shortly after his debut with Kane County, as the team felt becoming excessively reliant on the pitch early in his career would lead to injury. He finished the 2015 season with a 4.83 ERA in 17 total starts, including a 5.73 ERA over ten starts as a member of the Rome Braves. On Jhe was traded to the Atlanta Braves along with Bronson Arroyo for Phil Gosselin. Toussaint began the 2015 season at extended spring training, then joined the Kane County Cougars in May. Toussaint finished his first professional season with a 2–4 record and an 8.48 ERA over 12 total appearances. Toussaint pitched his first Pioneer League game on August 8, 2014. On August 3, he was promoted to the Missoula Osprey. He signed on June 20, agreeing to a $2.7 million signing bonus, and made his professional debut with the Arizona League Diamondbacks on July 2. The Arizona Diamondbacks selected Toussaint in the first round, 16th overall, of the draft. Toussaint was considered one of the top prospects for the 2014 MLB draft. Professional career Arizona Diamondbacks Toussaint committed to play college baseball at Vanderbilt University. He was named Broward County's Class 5A-4A-3A-2A Player of the Year. 458 with six home runs and 32 runs batted in. As a junior in 2013, Toussaint was a MaxPreps All-American after he was 6–2 with a 0.78 earned run average (ERA) and 83 strikeouts. Toussaint attended Coral Springs Charter School for his freshman year before transferring to Coral Springs Christian Academy also in Coral Springs, Florida. He stopped playing baseball at age 10 due to a strikeout-filled season as a batter, and focused on soccer and hockey only to return to baseball two years later, following a bet with a friend. Toussaint and his mother moved back to Florida when he was six. The family moved to Haiti when he was three months old.

Toussaint's nickname, Touki, is a portmanteau of his parents' surnames. He is of Haitian and Kenyan descent, and has an elder sister, Garielle.

Toussaint was born in Pembroke Pines, Florida, to Dany Toussaint and Kahaso Kiti.

Touki hahi