BARBORA KREJCIKOVA criticised “unprofessional commentary” regarding her appearance on the US TV network Tennis Channel today.

The Wimbledon champion was taking part in the WTA Finals in Saudi Arabia this week, the culmination to the regular women’s season, where she lost to Zheng Qinwen in the semi-finals on Friday.

Apparently not aware he was on air, Jon Wertheim, a prominent American tennis journalist, said of Krejcikova: “Who do you think I am? Barbora Krejcikova? Look at the forehead when Krejcikova and Zheng take the court.”