As a sophomore he was named to the Second Team All-Southland.[3] As a junior, he was named Southland Defensive Player of the Year and was selected to the First Team All-Southland. He had 73 blocks, an Islander single season record, and nine double doubles, which led the conference. In a game against Texas State on December 5, 2015, Thomas pulled down 19 rebounds.[4] Thomas averaged 16.6 points, 8.0 rebounds, and 2.3 blocks per game as a junior.[5] Thomas scored 23 points in a 79–61 win over UMBC in the semifinals of the 2017 CollegeInsider.com Tournament. He surpassed the 2,000 point mark in his career, becoming the first Islander to do so.[6] He averaged 22.5 points and 9.0 rebounds per game, and shot 53.4 percent from the field as a senior and repeated on the First Team All-Southland. Thomas participated in the Portsmouth Invitational Tournament, where he averaged 14 points in three games.[2] For his career he averaged 16.3 points and 7.7 rebounds per game.[7]
Professional career
After not being selected in the 2017 NBA draft, he signed a partially guaranteed deal with the Oklahoma City Thunder and competed for them in the NBA Summer League.[2] However, he was cut by the Thunder before appearing in a regular season game. Instead, he signed with their affiliate, the Oklahoma City Blue of the NBA G League. In 36 games, Thomas averaged 13.5 points, 6.8 rebounds, 2.6 assists, and 1.5 steals per game.[8]