![Ukraine's Dayana Yastremska wipes the sweat from her face during her third round match against United States' Serena Williams at the Australian Open tennis championships in Melbourne, Australia, Saturday, Jan. 19, 2019. ( Ukraine's Dayana Yastremska wipes the sweat from her face during her third round match against United States' Serena Williams at the Australian Open tennis championships in Melbourne, Australia, Saturday, Jan. 19, 2019. (](https://c8.alamy.com/comp/2MKNBR9/ukraines-dayana-yastremska-wipes-the-sweat-from-her-face-during-her-third-round-match-against-united-states-serena-williams-at-the-australian-open-tennis-championships-in-melbourne-australia-saturday-jan-19-2019-ap-photoandy-brownbill-2MKNBR9.jpg)
Ukraine's Dayana Yastremska wipes the sweat from her face during her third round match against United States' Serena Williams at the Australian Open tennis championships in Melbourne, Australia, Saturday, Jan. 19, 2019. (
![Germany's Alexander Zverev wives sweat from his face during his semifinal match against Germany's Dominik Koepfer at the Mexican Open tennis tournament in Acapulco, Friday, March 19, 2021. (AP Photo/Rebecca Blackwell Stock Germany's Alexander Zverev wives sweat from his face during his semifinal match against Germany's Dominik Koepfer at the Mexican Open tennis tournament in Acapulco, Friday, March 19, 2021. (AP Photo/Rebecca Blackwell Stock](https://c8.alamy.com/comp/2MEYETA/germanys-alexander-zverev-wives-sweat-from-his-face-during-his-semifinal-match-against-germanys-dominik-koepfer-at-the-mexican-open-tennis-tournament-in-acapulco-friday-march-19-2021-ap-photorebecca-blackwell-2MEYETA.jpg)
Germany's Alexander Zverev wives sweat from his face during his semifinal match against Germany's Dominik Koepfer at the Mexican Open tennis tournament in Acapulco, Friday, March 19, 2021. (AP Photo/Rebecca Blackwell Stock
![Sweat drips off the nose of Rafael Nadal of Spain as he gets set to serve to Denis Istomin of Uzbekistan in the first set of their first round match during opening Sweat drips off the nose of Rafael Nadal of Spain as he gets set to serve to Denis Istomin of Uzbekistan in the first set of their first round match during opening](https://c8.alamy.com/comp/TYRF2J/sweat-drips-off-the-nose-of-rafael-nadal-of-spain-as-he-gets-set-to-serve-to-denis-istomin-of-uzbekistan-in-the-first-set-of-their-first-round-match-during-opening-day-at-the-us-open-tennis-championships-at-the-usta-billie-jean-king-national-tennis-center-in-new-york-city-on-august-29-2016-nadal-won-6-1-6-46-2-photo-by-monika-graffupi-TYRF2J.jpg)
Sweat drips off the nose of Rafael Nadal of Spain as he gets set to serve to Denis Istomin of Uzbekistan in the first set of their first round match during opening
![Roger Federer of Switzerland wipes the sweat from his face during his quarterfinal match against Tomas Berdych of the Czech Republic at the Australian Open tennis championships in Melbourne, Australia, Tuesday, Jan. Roger Federer of Switzerland wipes the sweat from his face during his quarterfinal match against Tomas Berdych of the Czech Republic at the Australian Open tennis championships in Melbourne, Australia, Tuesday, Jan.](https://c8.alamy.com/comp/RA3ADW/rac-arena-perth-australia-1st-jan-2019-hopman-cup-tennis-sponsored-by-mastercard-frances-tiafoe-of-team-usa-wipes-the-sweat-from-his-face-during-his-match-against-roger-federer-of-team-switzerland-credit-action-plus-sportsalamy-live-news-RA3ADW.jpg)
Roger Federer of Switzerland wipes the sweat from his face during his quarterfinal match against Tomas Berdych of the Czech Republic at the Australian Open tennis championships in Melbourne, Australia, Tuesday, Jan.
![Danielle Collins of the United States in wipes sweat from her face during a match against Julia Goerges of Germany during day one of the Australian Open tennis tournament in Melbourne, Monday, Danielle Collins of the United States in wipes sweat from her face during a match against Julia Goerges of Germany during day one of the Australian Open tennis tournament in Melbourne, Monday,](https://c8.alamy.com/comp/2JXW4WX/danielle-collins-of-the-united-states-in-wipes-sweat-from-her-face-during-a-match-against-julia-goerges-of-germany-during-day-one-of-the-australian-open-tennis-tournament-in-melbourne-monday-january-14-2019-aap-imagelukas-coch-2JXW4WX.jpg)
Danielle Collins of the United States in wipes sweat from her face during a match against Julia Goerges of Germany during day one of the Australian Open tennis tournament in Melbourne, Monday,
![United States' Danielle Collins wipes sweat from her face during her semifinal against Petra Kvitova of the Czech Republic at the Australian Open tennis championships in Melbourne, Australia, Thursday, Jan. 24, 2019. ( United States' Danielle Collins wipes sweat from her face during her semifinal against Petra Kvitova of the Czech Republic at the Australian Open tennis championships in Melbourne, Australia, Thursday, Jan. 24, 2019. (](https://c8.alamy.com/comp/2MKMFY2/united-states-danielle-collins-wipes-sweat-from-her-face-during-her-semifinal-against-petra-kvitova-of-the-czech-republic-at-the-australian-open-tennis-championships-in-melbourne-australia-thursday-jan-24-2019-ap-photokin-cheung-2MKMFY2.jpg)
United States' Danielle Collins wipes sweat from her face during her semifinal against Petra Kvitova of the Czech Republic at the Australian Open tennis championships in Melbourne, Australia, Thursday, Jan. 24, 2019. (
![borna coric on X: "How many buckets of sweat do you think this is? 🤔 @Nikecourt https://t.co/URhoHbLWLy" / X borna coric on X: "How many buckets of sweat do you think this is? 🤔 @Nikecourt https://t.co/URhoHbLWLy" / X](https://pbs.twimg.com/media/EKOfp3kXUAALFwZ.jpg)
borna coric on X: "How many buckets of sweat do you think this is? 🤔 @Nikecourt https://t.co/URhoHbLWLy" / X
![Indian Wells, USA. 13th Mar, 2019. Rafael Nadal of Spain wipes sweat during the men's singles fourth round match against Filip Krajinovic of Serbia at the BNP Paribas Open tennis tournament in Indian Wells, USA. 13th Mar, 2019. Rafael Nadal of Spain wipes sweat during the men's singles fourth round match against Filip Krajinovic of Serbia at the BNP Paribas Open tennis tournament in](https://c8.alamy.com/comp/RYHGWG/indian-wells-usa-13th-mar-2019-rafael-nadal-of-spain-wipes-sweat-during-the-mens-singles-fourth-round-match-against-filip-krajinovic-of-serbia-at-the-bnp-paribas-open-tennis-tournament-in-indian-wells-california-the-united-states-march-13-2019-nadal-won-2-0-credit-zhao-hanrongxinhuaalamy-live-news-RYHGWG.jpg)
Indian Wells, USA. 13th Mar, 2019. Rafael Nadal of Spain wipes sweat during the men's singles fourth round match against Filip Krajinovic of Serbia at the BNP Paribas Open tennis tournament in
![Switzerland's Stan Wawrinka wipes sweat from his head during his second round match against Canada's Milos Raonic at the Australian Open tennis championships in Melbourne, Australia, Thursday, Jan. 17, 2019. (AP Photo/Aaron Switzerland's Stan Wawrinka wipes sweat from his head during his second round match against Canada's Milos Raonic at the Australian Open tennis championships in Melbourne, Australia, Thursday, Jan. 17, 2019. (AP Photo/Aaron](https://c8.alamy.com/comp/2MKNMFM/switzerlands-stan-wawrinka-wipes-sweat-from-his-head-during-his-second-round-match-against-canadas-milos-raonic-at-the-australian-open-tennis-championships-in-melbourne-australia-thursday-jan-17-2019-ap-photoaaron-favila-2MKNMFM.jpg)