Petra Kvitova beats Caroline Wozniaki 2-1 at 2018 WTA Qatar Open

Caroline Wozniaki of Denmark hits a return during the single's semifinal match against Petra Kvitova of the Czech Republic at the 2018 WTA Qatar Open in Doha, Qatar, on Feb. 17, 2018. Petra Kvitova won 2-1. (Xinhua/Nikku)