Tsvetana Pironkova's dream comeback continues at US Open

Tsvetana Pironkova stunned Garbine Muguruza to reach the third round of the US Open – her first tournament for more than three years. The Bulgarian, a former Wimbledon semi-finalist, retired following the championships in 2017 and gave birth to her first child, son Alexander, but decided to give the tour another shot earlier this year. The suspension of professional sport delayed her comeback...