1971 Clemmons • ATP 250 1977 Finale,National Bank Open • ATP Masters 1000 1972 Semifinale,National Bank Open • ATP Masters 1000 1982 Bahia • ATP 250 1981 Mexico by • ATP 250 1975 Düsseldorf • ATP 250 1975 Semifinale,Philadelphia • WCT 1973 Clemmons • ATP 250 1975 Kvartfinale,US Open • Grand Slam 1977 Semifinale,Hamburg • ATP Masters 1000 1976 Semifinale,National Bank Open • ATP Masters 1000 1976 Semifinale,Hamburg • ATP Masters 1000 1974 Semifinale,Hamburg • ATP Masters 1000 1973 Semifinale,Hamburg • ATP Masters 1000 1975 Semifinale,Barcelona • ATP 500 1973 Semifinale,Washington • ATP 500 1976 Finale,Buenos Aires • ATP 250 1976 Semifinale,Düsseldorf • ATP 250 1971 Semifinale,Houston • ATP 250 1976 Finale,Rolex Paris Masters • ATP Masters 1000 1982 4. runde,US Open • Grand Slam 1976 4. runde,Roland Garros • Grand Slam 1975 4. runde,Roland Garros • Grand Slam 1974 4. runde,Wimbledon • Grand Slam 1974 4. runde,Roland Garros • Grand Slam 1970 4. runde,Roland Garros • Grand Slam 1971 Kvartfinale,Cincinnati • ATP Masters 1000 1969 Kvartfinale,Cincinnati • ATP Masters 1000 1978 Kvartfinale,Washington • ATP 500 1977 Semifinale,Basel • ATP 500