Polona Hercog of Slovenia reacts during her women's singles first round match against Claire Liu of the United States on Day One of the 2018 US Open at the USTA…
Polona Hercog: third round - The Championships, Wimbledon - Official Site by IBM
Polona Hercog - Wikipedia
File:2017 US Open Tennis - Qualifying Rounds - Viktoriya Tomova (BUL) def. Polona Hercog (SLO) (36661179020).jpg - Wikimedia Commons