Martina Navratilova

Martina Navratilova holds the all-time record of 167 singles titles, including 18 Grand Slam singles titles, a feat unmatched by any male or female player in tennis history. Her career win percentage of 86.8% in singles matches outranks Billie Jean King’s 78.2%, a gap of 8.6 percentage points that underscores her sustained dominance over four decades from the 1970s through 2000s. She also claimed 59 Grand Slam titles across all disciplines, a total that is 51% higher than the typical career output of any top-10 tennis rival.