Van Tubbergen attended
Grand Valley State University ('22) in
Allendale, Michigan, on a full scholarship, and played for its basketball team the
Grand Valley State Lakers for five years. He averaged 11.4 points and 6.6 rebounds per game, while shooting .561 from the floor (fifth in the
Great Lakes Intercollegiate Athletic Conference (GLIAC)). As a junior in 2019–20, Van Tubbergen averaged 18.4 points (4th in the conference), 10.0 rebounds (leading the conference), and 2.6 offensive rebounds (leading the conference) per game, as he shot .542 from the field (5th) and had 14
double-doubles, which ranked 14th in the nation. By January 2020, he had put on 30 pounds since his freshman year, when he was rather skinny. He was named an
National Association of Basketball Coaches (NABC) D2
All-American (the first Lakers player so named in 11 seasons), D2CCA
NCAA D2 honorable mention All-American, 2020 D2CCA NCAA D2 All-Midwest Region First Team, unanimous first team All-Region, and first team All-GLIAC. As a senior in 2021 he averaged 13.6 points and 8.0 rebounds per game, with an .810 free throw percentage (5th in the conference). Van Tubbergen opted to take an extra year of NCAA eligibility, which the NCAA offered athletes due to the COVID-19 pandemic. In 2021–22, he averaged 17.2 points and 10.6 rebounds per game while shooting .541 from the field. He finished his career with 2,005 career points, fourth on the Grand Valley State all-time list. ==Professional career==