[13] At the 2015 NCAA indoor championships he repeated as champion, running 7.55 in the heats and 7.45 in the final; his time in the final was a new Jamaican indoor record, broke Reggie Torian's NCAA record from 1997 and tied with Cuba's Orlando Ortega for the world's fastest time that winter.

[13][16][17] Outdoors, McLeod set a personal best of 13.21 at the Drake Relays and won at both the SEC meet and the West Regionals.

[13] He entered the NCAA outdoor championships in Eugene as the favorite; he won, running 13.08 in the heats and 13.01 in the final, but both times were wind-aided.

[13][19] After the 2015 collegiate season McLeod turned professional and signed an endorsement deal with Nike, forgoing his two remaining years as an NCAA athlete; although he stayed at Arkansas to complete his business studies, he lost his eligibility to represent the Arkansas Razorbacks.

[22] He made his debut as a professional at the István Gyulai Memorial in Székesfehérvár on 7 July, but pulled up with a cramp and failed to finish.

At the 2019 World Championships, McLeod was disqualified in the final for a lane violation, impeding Orlando Ortega.