Clijsters's childhood tennis idol was Steffi Graf. She cites her lone WTA Tour match against Graf at Wimbledon in 1999 as being very influential, saying, "It was unbelievable. All I wanted to do was watch her. I wanted to see how she tied her shoelaces, what her ponytail looked like, how she carried her bag. Even though I lost, the impact of that and the motivation it gave me was huge. It was definitely the biggest moment of my career". She also looked up to Monica Seles and viewed both Graf and Seles as role models, drawing inspiration from their level of focus.