<page_title> Guillermo Vilas </page_title> <section_title> Singles performance timeline </section_title> <table> <cell> Grand Slam tournaments <col_header> Tournament </col_header> <col_header> 1970 </col_header> <col_header> 1971 </col_header> <col_header> 1972 </col_header> <col_header> 1973 </col_header> <col_header> 1974 </col_header> <col_header> 1975 </col_header> <col_header> 1976 </col_header> <col_header> 1977 </col_header> <col_header> 1978 </col_header> <col_header> 1979 </col_header> <col_header> 1980 </col_header> <col_header> 1981 </col_header> <col_header> 1982 </col_header> <col_header> 1983 </col_header> <col_header> 1984 </col_header> <col_header> 1985 </col_header> <col_header> 1986 </col_header> <col_header> 1987 </col_header> <col_header> 1988 </col_header> <col_header> 1989 </col_header> <col_header> SR </col_header> <col_header> W–L </col_header> </cell> <cell> W <col_header> 1978 </col_header> </cell> <cell> W <col_header> 1979 </col_header> </cell> <cell> W <col_header> 1977 </col_header> </cell> <cell> W <col_header> 1977 </col_header> </cell> </table>
Guillermo Vilas won four Grand Slam titles: the 1977 French Open and the 1977 US Open and the 1978 and 1979 Australian Open.