On November 10, 2017, Morant debuted for Murray State with 7 points and a team-high 11 assists in a 118–61 victory over Brescia University of the National Association of Intercollegiate Athletics (NAIA). He recorded his first career double-double on December 12, 2017, with 10 points, 12 rebounds, and 6 assists in a 69–55 loss to Saint Louis. He posted his first triple-double on December 28, recording 11 points, 10 rebounds, and 14 assists in an 80–52 win over Eastern Illinois. It was the second triple-double in school history, the first coming from Isacc Miles in 1984, and was also the record for most assists at a CFSB Center game, surpassing the old mark of 12 established by Aubrey Reese against Alabama State in 1999. Morant also had the third-most assists in a single game by a Murray State player. On February 1, 2018, he scored a season-high 23 points against Southeast Missouri State. After averaging 12. 7 points, 6. 5 rebounds, and 6. 3 assists per game, Morant earned first-team All-OVC and OVC All-Newcomer Team accolades. His 6. 3 assists per game ranked 14th in the nation his freshman season. He became the seventh freshman in 25 years to accumulate 150 assists, 150 rebounds, and 10 blocks while shooting at least 42 percent from the field. Morant and Murray State advanced to the NCAA Tournament his freshman season after capturing an OVC Championship in a 68-51 win over Belmont. Morant had 15 points, 5 assists, and 5 rebounds in that game. Murray State would lose in its opening round game to West Virginia, however, falling 85-68 despite Morant's 14 points.