He was injured prior to the 1972 Munich Olympic trials, and did not qualify for the 1972 Summer Olympics. He did defeat Mykola Avilov, the 1972 Olympic Champion, during the 1971 USA–USSR Track and Field Dual Meet Series, held in Berkley, California and Bruce Jenner, the 1976 Olympic Champion, now known as Caitlyn Jenner, at the 1971 Drake Relays and 1971 National AAU Championships in Porterville, California. Wanamaker placed fifth at the 1970 Summer Universiade Men's decathlon in Turin, Italy.