<page_title> Martina Navratilova </page_title> <section_title> Records </section_title> <table> <cell> 1983 <col_header> Time span </col_header> </cell> <cell> 98.9% (86–1) single season match winning percentage <col_header> Other selected records </col_header> </cell> </table>
Martina Navratilova holds the best season win-loss record in the open era, 86-1 (98.9%) in 1983.