 He went on to study with Daniel K. Pai, Robert Trias, Seiyu Oyata, Hohan Soken, Wally Jay and Muhammad Ali.In 1982, "Official Karate Magazine" described Dillman as one of the winningest competitors karate has ever known.In May 1998, Dillman became the first martial artist inducted into the Berks County Sports Hall of Fame.