1971 Semi final,Amersfoort • ATP 250 1972 4th round,Wimbledon • Grand Slam 1972 4th round,French Open • Grand Slam 1973 Semi final,Bretton Woods • ATP 250 1974 3rd round,Wimbledon • Grand Slam 1972 3rd round,Cincinnati • ATP Masters 1000 1972 3rd round,San Jose • ATP 250 1972 3rd round,Houston • ATP 250 1971 Quarter final,Sydney • ATP 250 1973 Quarter final,Amersfoort • ATP 250 1974 2nd round,US Open • Grand Slam 1973 2nd round,Australian Open • Grand Slam 1973 2nd round,US Open • Grand Slam 1972 2nd round,Australian Open • Grand Slam 1971 2nd round,Wimbledon • Grand Slam 1970 2nd round,Wimbledon • Grand Slam 1970 2nd round,French Open • Grand Slam 1973 2nd round,National Bank Open • ATP Masters 1000 1973 2nd round,Tokyo • ATP 500 1974 2nd round,Auckland • ATP 250