Marie Bouzkova of Czech Republic serves during the Ladies' Singles first round match against Mona Barthel of Germany during Day one of The Championships – Wimbledon 2019 at All England Lawn Tennis and Croquet Club on July 01, 2019 in London, England. (Photo by Matthias Hangst/Getty Images)





A bee extracts pollen from a flower as Taiwan’s Hsieh Su-wei plays her second-round match against Belgium’s Kirsten Flipkens at Wimbledon in London, England on July 3, 2019. (Photo by Toby Melville/Reuters)





A tennis fan with a Slazenger ball dyed into his hair on day one of the Wimbledon Championships at the All England Lawn Tennis and Croquet Club, Wimbledon on July 1, 2019. (Photo by Mike Egerton/PA Images via Getty Images)





Fans enter the grounds ahead of Day 6 of The Championships – Wimbledon 2019 at All England Lawn Tennis and Croquet Club on July 06, 2019 in London, England. (Photo by Laurence Griffiths/Getty Images)





Russia's Maria Sharapova serves against France's Pauline Parmentier during their women's singles first round match on the second day of the 2019 Wimbledon Championships at The All England Lawn Tennis Club in Wimbledon, southwest London, on July 2, 2019. (Photo by Ben Stansall/AFP Photo)





Italy's Hassane Fofana is seen ahead of the men's 110m hurdles race at the 2019 European Games at Dinamo Stadium in Minsk, Belarus on June 28, 2019. (Photo by Vasily Fedosenko/Reuters)





Slovenia's Tjasa Ristic in action against Ukraine's Anita Serogina during the women's Kumite -61kg karate final at the 2019 European Games in Minsk, Belarus on June 30, 2019. (Photo by Vasily Fedosenko/Reuters)





Germany's Alexander Zverev returns the ball to Czech Republic's Jiri Vesely during their men's singles first round match on the first day of the 2019 Wimbledon Championships at The All England Lawn Tennis Club in Wimbledon, southwest London, on July 1, 2019. (Photo by Toby Melville/Reuters)





Spain's Sara Sorribes Tormo in action during her first round match against Denmark's Caroline Wozniacki on the first day of the 2019 Wimbledon Championships at The All England Lawn Tennis Club in Wimbledon, southwest London, on July 1, 2019. (Photo by Hannah McKay/Reuters)





US player Cori Gauff slips as she returns against US player Venus Williams during their women's singles first round match on the first day of the 2019 Wimbledon Championships at The All England Lawn Tennis Club in Wimbledon, southwest London, on July 1, 2019. (Photo by Toby Melville/Reuters)





A pitch invader attempts to evade a security official during the 2019 Cricket World Cup group stage match between England and New Zealand at the Riverside Ground, in Chester-le-Street, northeast England, on July 3, 2019. (Photo by Lee Smith/Action Images via Reuters)





United States' Alison Riske serves to Serbia's Ivana Jorovic in a Women's singles match during day four of the Wimbledon Tennis Championships in London, Thursday, July 4, 2019. (Photo by Ben Curtis/AP Photo)





Sarah True of the United States competes in the Ironman Triathlon in Frankfurt, Germany, Sunday, June 30, 2019. True had to give up in leading position just some hundred meters before the finish. (Photo by Michael Probst/AP Photo)





In this March 1, 2019, file photo, Jon Jones poses during the ceremonial UFC 235 mixed martial arts weigh-in event in Las Vegas. Jones defends his light heavyweight title against Thiago Santos, of Brazil, in the main event of UFC 239 at T-Mobile Arena in Las Vegas on Saturday night, July 6, 2019. (Photo by Erik Verduzco/Las Vegas Review-Journal via AP Photo)





Amanda Nunes of Brazil lands a kick on Holly Holms that knocked her to the mat in the first round of their bantamweight title mixed martial arts bout during UFC 239 in Las Vegas on Saturday, July 6, 2019. Nunes won in the first round. (Photo by Steve Marcus/Las Vegas Sun via AP Photo)





Max Verstappen of Red Bull Racing and The Netherlands during qualifying for the F1 Grand Prix of Austria at Red Bull Ring on June 29, 2019 in Spielberg, Austria. (Photo by Peter J. Fox/Getty Images)





United States' Cori “Coco” Gauff reacts after beating United States's Venus Williams in a Women's singles match during day one of the Wimbledon Tennis Championships in London, Monday, July 1, 2019. (Photo by Tim Ireland/AP Photo)





Great Britain's Georgia-Mae Fenton competes in the balance beam event of the women's apparatus final of the Artistic Gymnastics at the 2019 European Games in Minsk on June 30, 2019. (Photo by Kirill Kudryavtsev/AFP Photo)