Martina Hingis was known for her fighting spirit on court and, sometimes, her fighting words off it. You can see her drive is still there today, but also that time has softened the attitude.

Martina Hingis has announced her retirement ... "Looking back now, it's hard to believe that almost exactly 23 years ago I made my professional debut," Hingis wrote. "The years that followed ...

"Well she [Martina Hingis] was so nice. I think that was really early, I mean she was hitting ... She won her first Major at just 16 years of age. She remains the game's youngest Grand Slam ...

Top-ranked women's tennis player Martina Hingis today refused to back down after claiming Serena and Venus Williams were given preferential treatment because they were black. The world number one ...

20 years after her first Grand Slam title, we look back at Serena Williams' 1999 US Open run. Footage courtesy of the USTA. Why not watch this next… ...