Freshman season at Barton

Antowine played in 32 games as a freshman for Barton, averaging 3.0 points and 2.9 rebounds. Antowine shot 54 percent from the floor for the Cougars and blocked 24 shots. 

High School

Antowine played at Highland Park High School in Topeka. As a senior center he averaged 6 points and 8.7 rebounds per game while connecting on 63% of his free throws. Antowine earned All-State Honorable Mention after his senior season. He also lettered in track and field at Highland Park.