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Cass Mattheis is a basketball player. In 2017-2018, Cass Mattheis played 2 games for Notre Dame (CA) (Non-Conf Games), averaging 1.5 points and 1.0 rebounds in 9.5 minutes per game on 50.0% field-goal shooting. Scouting4U covers 1 season of Cass Mattheis's career (2017-2018), with 1 club.