Love in tennis is something really difficult.
Radek Stepanek is a veteran also in this department as he was engaged to Martina Hingis, he got married (and divorced) with Nicole Vaidosova and he was dating Petra Kvitova. (see article)
According to the Czech media Radek and Petra decided to part ways. Petra commented “To combine a career and a relationship between two top players is sometimes impossible.”.
Karel Tejkal, Czech tennis spokesperson, commented “Petra and Radek are friends and will continue to support one another.”
