On November 20, 2017, in his fourth college game at Pepperdine, Ross scored a freshman season-high 25 points and added five rebounds and four assists in a 92–84 loss to UC Santa Barbara at the Legends Classic. On January 18, 2018, he scored 25 points for a second time, along with eight assists, in a 92–78 loss to Pacific. As a freshman, Ross averaged 14 points, 5.6 assists and three rebounds per game, setting a school freshman record for total assists, with 179. He was named to the West Coast Conference All-Freshman Team and was an All-WCC honorable mention selection. On December 31, 2018, as a sophomore, Ross posted 10 points and a career-high 13 assists in a 100–64 victory over Alabama A&M. On March 2, 2019, he scored a season-high 36 points and reached 1,000 career points in a 73–72 loss to Pacific. Ross earned WCC All-Tournament Team honors after leading Pepperdine to the semifinals of the 2019 WCC Tournament. He averaged 19.4 points, a WCC-high seven assists and 2.9 rebounds per game and was named to the first team All-WCC. Ross set single-season program records for total assists and assists per game. On November 19, 2019, as a junior, Ross recorded a then-career-high 38 points and six rebounds in a 91–84 loss to USC. On January 4, 2020, he tallied 24 points and 10 assists in a 75–70 loss to second-ranked Gonzaga. Ross posted 30 points, including 27 in the second half, along with a career-high 14 rebounds and five assists in a 66–59 victory over Portland on February 20. In an 89–82 double overtime loss to Saint Mary's during the 2020 WCC Tournament quarterfinals, Ross scored a career-high 43 points, making seven three-pointers while adding eight rebounds and five assists. He was named to the WCC All-Tournament Team. In his junior season, Ross averaged 20.5 points, a WCC-high 7.2 assists and 4.7 rebounds per game and earned first-team All-WCC honors for his second time. He broke his own school single-season assists record and was the only Division I player to average at least 20 points and seven assists per game. After the season, Ross entered the 2020 NBA draft.
Career statistics
College
Personal life
Ross' older brother, Elijah, played basketball for Eaglecrest High School and won a state championship in 2013. He later played NCAA Division II basketball for UCCS, earning all-conference honors and becoming the program's all-time leader in assists. Ross' favorite NBA player is Damian Lillard.