![Elton John works up a sweat during charity tennis match against Martina Navratilova | Daily Mail Online Elton John works up a sweat during charity tennis match against Martina Navratilova | Daily Mail Online](https://i.dailymail.co.uk/i/pix/2015/10/13/09/2D5B9CA700000578-0-image-m-30_1444725861364.jpg)
Elton John works up a sweat during charity tennis match against Martina Navratilova | Daily Mail Online
![Elton John hits a forehand during the Mylan WTT Smash Hits tennis event at Caesars Palace hotel-casino in Las Vegas on Monday, Oct. 12, 2015. Joshua Dahl/Las Vegas Review-Journal | Las Vegas Elton John hits a forehand during the Mylan WTT Smash Hits tennis event at Caesars Palace hotel-casino in Las Vegas on Monday, Oct. 12, 2015. Joshua Dahl/Las Vegas Review-Journal | Las Vegas](https://www.reviewjournal.com/wp-content/uploads/2015/10/1003803877_ten-kantowski_12.jpg)
Elton John hits a forehand during the Mylan WTT Smash Hits tennis event at Caesars Palace hotel-casino in Las Vegas on Monday, Oct. 12, 2015. Joshua Dahl/Las Vegas Review-Journal | Las Vegas
![Elton John and tennis star Billie Jean King could pass for twins as they share a high five | The Sun Elton John and tennis star Billie Jean King could pass for twins as they share a high five | The Sun](https://www.thesun.co.uk/wp-content/uploads/2016/10/nintchdbpict000273768905.jpg)
Elton John and tennis star Billie Jean King could pass for twins as they share a high five | The Sun
![Sir Elton John plays during the WTT Smash Hits charity tennis event at Caesars Palace in Las Vegas on October 10, 2016. Richard Brian/Las Vegas Review-Journal Follow @vegasphotograph | Las Vegas Review-Journal Sir Elton John plays during the WTT Smash Hits charity tennis event at Caesars Palace in Las Vegas on October 10, 2016. Richard Brian/Las Vegas Review-Journal Follow @vegasphotograph | Las Vegas Review-Journal](https://www.reviewjournal.com/wp-content/uploads/2016/10/web1_ten-kantowski_101016_001_7161565.jpg)
Sir Elton John plays during the WTT Smash Hits charity tennis event at Caesars Palace in Las Vegas on October 10, 2016. Richard Brian/Las Vegas Review-Journal Follow @vegasphotograph | Las Vegas Review-Journal
![Elton John works up a sweat during charity tennis match against Martina Navratilova | Daily Mail Online Elton John works up a sweat during charity tennis match against Martina Navratilova | Daily Mail Online](https://i.dailymail.co.uk/i/pix/2015/10/13/09/2D5B6B8700000578-3270441-image-m-40_1444726640063.jpg)
Elton John works up a sweat during charity tennis match against Martina Navratilova | Daily Mail Online
![306 Sir Elton John And Billie Jean King Host World Teamtennis Smash Hits Charity Event Photos & High Res Pictures - Getty Images 306 Sir Elton John And Billie Jean King Host World Teamtennis Smash Hits Charity Event Photos & High Res Pictures - Getty Images](https://media.gettyimages.com/id/613935902/photo/recording-artist-sir-elton-john-competes-in-the-world-teamtennis-smash-hits-charity-tennis.jpg?s=612x612&w=gi&k=20&c=6omT45p2givwbOIoTgOqdrKZsvlXkDEtP02ej0WSCEw=)