Coach Pettway attended Wilbraham and Monson Academy in Wilbraham, Massachusetts before transferring and graduating from the Hoosac School in upstate New York. He played collegiately at Bryant University. He earned rookie of the year freshman year and made second-team all conference his sophomore year. After transferring to Angelo State University in Texas his teams racked up a record of 45-15. They earned two NCAA tournament appearances while Marcel earned two honorable mentions and two all-region teams. He graduated in May of 2020 with a bachelors in business administration and a minor in communications.