• 1960 Teen Age Mr. America (3rd)
  • 1962 Mr. Keystone State (Winner)
  • 1965 IFBB Mr. Universe (1st, Medium Height category)
  • 1965 IFBB Mr. North America (Winner)
  • 1966 IFBB Mr. Eastern America (Winner)
  • 1966 IFBB Mr. America (1st, Medium)
  • 1967 IFBB Mr. America (1st, Medium)
  • 1968 IFBB Mr. America (Winner)
  • 1968 IFBB Mr. Universe (Winner)
  • 1970 NABBA Amateur Mr. Universe (Winner)
  • 1971 NABBA Pro Mr. Universe (1st, Short)
  • 1972 NABBA Pro Mr. Universe (Winner)
  • 1974 IFBB Mr. Olympia (Under 200 lbs, 2nd)
  • 1976 IFBB Mr. Olympia (Under 200 lbs, 2nd)
  • 1977 IFBB Mr. Olympia (Under 200 lbs & Overall Winner)
  • 1978 IFBB Mr. Olympia (Under 200 lbs & Overall Winner)
  • 1979 IFBB Mr. Olympia (Under 200 lbs & Overall Winner)
  • 1980 IFBB Mr. Olympia (3rd, after suffering a near-fatal injury at his home, requiring lengthy hospitalization)
  • 1981 (Did not compete; boycotted the Mr Olympia contest after the controversial 1980 contest)
  • 1982 IFBB Mr. Olympia (2nd)
  • 1983 IFBB Mr. Olympia (4th, after suffering another accident on his bicycle, requiring extensive shoulder surgery shortly after the contest)