 Post began his college career at Southwestern Illinois where he became one of the country's top junior college players as a sophomore after averaging 12.3 points and 8.3 rebounds and earning Second Team Junior College All-America.As a junior, he transferred to Missouri and as a senior he averaged 4.0 points and 3.6 rebounds in 29 games.After going undrafted in the 2015 NBA draft, Post signed with Raptors 905 on October 31, 2015, as an affiliate player.