Soccer Football - Pre Season Friendly - Southampton v Borussia Moenchengladbach - St Mary's, Southampton, Britain - August 4, 2018 Borussia Moenchengladbach's Florian Mayer Action Images via Reuters/Craig Brough 

Tennis - Wimbledon - London, Britain - July 5, 2017 Croatia’s Marin Cilic celebrates winning the second round match against Germany’s Florian Mayer REUTERS/Andrew Couldridge 

Tennis - Wimbledon - London, Britain - July 5, 2017 Croatia’s Marin Cilic with Germany’s Florian Mayer after winning their second round match REUTERS/Andrew Couldridge 

Tennis - Wimbledon - London, Britain - July 5, 2017 Croatia’s Marin Cilic celebrates winning the second round match against Germany’s Florian Mayer REUTERS/Andrew Couldridge 

Tennis - Wimbledon - London, Britain - July 5, 2017 Croatia’s Marin Cilic in action during his second round match against Germany’s Florian Mayer REUTERS/Andrew Couldridge 

Tennis - Wimbledon - London, Britain - July 5, 2017 Croatia’s Marin Cilic celebrates winning the first set during the second round match against Germany’s Florian Mayer REUTERS/Andrew Couldridge 

Tennis - Wimbledon - London, Britain - July 5, 2017 Croatia’s Marin Cilic in action during his second round match against Germany’s Florian Mayer REUTERS/Andrew Couldridge 

Tennis - Wimbledon - London, Britain - July 5, 2017 Croatia’s Marin Cilic in action during his second round match against Germany’s Florian Mayer REUTERS/Andrew Couldridge 

Tennis - Wimbledon - London, Britain - July 5, 2017 Croatia’s Marin Cilic reacts during his second round match against Germany’s Florian Mayer REUTERS/Andrew Couldridge 

Tennis - Wimbledon - London, Britain - July 5, 2017 Germany’s Florian Mayer in action during his second round match against Croatia’s Marin Cilic REUTERS/Andrew Couldridge 

Tennis - Wimbledon - London, Britain - July 5, 2017 Croatia’s Marin Cilic reacts during his second round match against Germany’s Florian Mayer REUTERS/Andrew Couldridge 

Tennis - Wimbledon - London, Britain - July 5, 2017 Croatia’s Marin Cilic in action during his second round match against Germany’s Florian Mayer REUTERS/Andrew Couldridge 

Tennis - Wimbledon - London, Britain - July 5, 2017 Croatia’s Marin Cilic in action during his second round match against Germany’s Florian Mayer REUTERS/Andrew Couldridge 

Tennis - Australian Open - Melbourne Park, Melbourne, Australia - 17/1/17 Spain's Rafael Nadal signs autographs after winning his Men's singles first round match against Germany's Florian Mayer. REUTERS/Jason Reed 

Tennis - Australian Open - Melbourne Park, Melbourne, Australia - 17/1/17 Spain's Rafael Nadal signs autographs after winning his Men's singles first round match against Germany's Florian Mayer. REUTERS/Jason Reed 

Tennis - Australian Open - Melbourne Park, Melbourne, Australia - 17/1/17 Spain's Rafael Nadal stretches to hit a shot during his Men's singles first round match against Germany's Florian Mayer. REUTERS/Jason Reed 

Tennis - Australian Open - Melbourne Park, Melbourne, Australia - 17/1/17 Spain's Rafael Nadal serves during his Men's singles first round match against Germany's Florian Mayer. REUTERS/Jason Reed 

Tennis - Australian Open - Melbourne Park, Melbourne, Australia - 17/1/17 Spain's Rafael Nadal celebrates after winning his Men's singles first round match against Germany's Florian Mayer. REUTERS/Jason Reed 

Tennis - Australian Open - Melbourne Park, Melbourne, Australia - 17/1/17 Spain's Rafael Nadal shakes hands after winning his Men's singles first round match against Germany's Florian Mayer. REUTERS/Jason Reed 

Tennis - Australian Open - Melbourne Park, Melbourne, Australia - 17/1/17 Spain's Rafael Nadal celebrates after winning his Men's singles first round match against Germany's Florian Mayer. REUTERS/Jason Reed 

Tennis - Australian Open - Melbourne Park, Melbourne, Australia - 17/1/17 Spain's Rafael Nadal celebrates after winning his Men's singles first round match against Germany's Florian Mayer. REUTERS/Jason Reed 

Tennis - Australian Open - Melbourne Park, Melbourne, Australia - 17/1/17 Spain's Rafael Nadal stretches to hit a shot during his Men's singles first round match against Germany's Florian Mayer. REUTERS/Jason Reed 

Tennis - Australian Open - Melbourne Park, Melbourne, Australia - 17/1/17 Spain's Rafael Nadal stretches to hit a shot during his Men's singles first round match against Germany's Florian Mayer. REUTERS/Jason Reed 

Tennis - Australian Open - Melbourne Park, Melbourne, Australia - 17/1/17 Spain's Rafael Nadal stretches to hit a shot during his Men's singles first round match against Germany's Florian Mayer. REUTERS/Jason Reed 

Tennis - Australian Open - Melbourne Park, Melbourne, Australia - 17/1/17 Spain's Rafael Nadal jumps as he hits a shot during his Men's singles first round match against Germany's Florian Mayer. REUTERS/Jason Reed 

Tennis - Australian Open - Melbourne Park, Melbourne, Australia - 17/1/17 Spain's Rafael Nadal jumps as he hits a shot during his Men's singles first round match against Germany's Florian Mayer. REUTERS/Jason Reed 

Tennis - Australian Open - Melbourne Park, Melbourne, Australia - 17/1/17 Spain's Rafael Nadal jumps as he hits a shot during his Men's singles first round match against Germany's Florian Mayer. REUTERS/Jason Reed 

Tennis - Australian Open - Melbourne Park, Melbourne, Australia - 17/1/17 Germany's Florian Mayer hits a shot during his Men's singles first round match against Spain's Rafael Nadal. REUTERS/Jason Reed 

Tennis - Australian Open - Melbourne Park, Melbourne, Australia - 17/1/17 Spain's Rafael Nadal stretches to hit a shot during his Men's singles first round match against Germany's Florian Mayer. REUTERS/Jason Reed 

Tennis - Australian Open - Melbourne Park, Melbourne, Australia - 17/1/17 Spain's Rafael Nadal stretches to hit a shot during his Men's singles first round match against Germany's Florian Mayer. REUTERS/Jason Reed 

Tennis - Australian Open - Melbourne Park, Melbourne, Australia - 17/1/17 Spain's Rafael Nadal stretches to hit a shot during his Men's singles first round match against Germany's Florian Mayer. REUTERS/Jason Reed 

Tennis - Australian Open - Melbourne Park, Melbourne, Australia - 17/1/17 Spain's Rafael Nadal changes shirts during his Men's singles first round match against Germany's Florian Mayer. REUTERS/Jason Reed 

Tennis - Australian Open - Melbourne Park, Melbourne, Australia - 17/1/17 Germany's Florian Mayer reacts during his Men's singles first round match against Spain's Rafael Nadal. REUTERS/Jason Reed 

Tennis - Australian Open - Melbourne Park, Melbourne, Australia - 17/1/17 Spain's Rafael Nadal hits a shot during his Men's singles first round match against Germany's Florian Mayer. REUTERS/Jason Reed 

Tennis - Australian Open - Melbourne Park, Melbourne, Australia - 17/1/17 Spain's Rafael Nadal sweats as he prepares to serve during his Men's singles first round match against Germany's Florian Mayer. REUTERS/Jason Reed TPX IMAGES OF THE DAY 

Tennis - Australian Open - Melbourne Park, Melbourne, Australia - 17/1/17 Spain's Rafael Nadal throws a towel during his Men's singles first round match against Germany's Florian Mayer. REUTERS/Jason Reed 

Tennis - Australian Open - Melbourne Park, Melbourne, Australia - 17/1/17 Spain's Rafael Nadal sweats as he prepares to serve during his Men's singles first round match against Germany's Florian Mayer. REUTERS/Jason Reed 

Tennis - Australian Open - Melbourne Park, Melbourne, Australia - 17/1/17 Spain's Rafael Nadal hits a shot during his Men's singles first round match against Germany's Florian Mayer. REUTERS/Jason Reed 

Tennis - Australian Open - Melbourne Park, Melbourne, Australia - 17/1/17 Spain's Rafael Nadal serves during his Men's singles first round match against Germany's Florian Mayer. REUTERS/Jason Reed 

Tennis - Australian Open - Melbourne Park, Melbourne, Australia - 17/1/17 Spain's Rafael Nadal walks onto the court before his Men's singles first round match against Germany's Florian Mayer. REUTERS/Jason Reed 

Tennis - Shanghai Masters tennis tournament - Shanghai, China - 10/10/16. Jo-Wilfried Tsonga of France reacts during his match against Florian Mayer of Germany. REUTERS/Aly Song 

Tennis - Shanghai Masters tennis tournament - Shanghai, China - 10/10/16. Jo-Wilfried Tsonga of France celebrates after defeating Florian Mayer of Germany. REUTERS/Aly Song 

Tennis - Shanghai Masters tennis tournament - Shanghai, China - 10/10/16. Florian Mayer of Germany plays against Jo-Wilfried Tsonga of France. REUTERS/Aly Song 

Tennis - Shanghai Masters tennis tournament - Shanghai, China - 10/10/16. Florian Mayer of Germany plays against Jo-Wilfried Tsonga of France. REUTERS/Aly Song 

Tennis - Shanghai Masters tennis tournament - Shanghai, China - 10/10/16. Jo-Wilfried Tsonga of France plays against Florian Mayer of Germany. REUTERS/Aly Song 

Tennis - Shanghai Masters tennis tournament - Shanghai, China - 10/10/16. Jo-Wilfried Tsonga of France plays against Florian Mayer of Germany. REUTERS/Aly Song 

Tennis - Shanghai Masters tennis tournament - Shanghai, China - 10/10/16. Jo-Wilfried Tsonga of France plays against Florian Mayer of Germany. REUTERS/Aly Song 

Tennis - Shanghai Masters tennis tournament - Shanghai, China - 10/10/16. Florian Mayer of Germany plays against Jo-Wilfried Tsonga of France. REUTERS/Aly Song 

Tennis - Shanghai Masters tennis tournament - Shanghai, China - 10/10/16. Jo-Wilfried Tsonga of France plays against Florian Mayer of Germany. REUTERS/Aly Song 

Tennis - Shanghai Masters tennis tournament - Shanghai, China - 10/10/16. Jo-Wilfried Tsonga of France plays against Florian Mayer of Germany. REUTERS/Aly Song 

Tennis - China Open Men's Singles First Round - Beijing, China - 04/10/16. Canada's Milos Raonic plays against Germany's Florian Mayer. REUTERS/Thomas Peter 

Tennis - China Open Men's Singles First Round - Beijing, China - 04/10/16. Germany's Florian Mayer plays against Canada's Milos Raonic. REUTERS/Thomas Peter 

Tennis - China Open Men's Singles First Round - Beijing, China - 04/10/16. Germany's Florian Mayer plays against Canada's Milos Raonic. REUTERS/Thomas Peter 

Tennis - China Open Men's Singles First Round - Beijing, China - 04/10/16. Canada's Milos Raonic plays against Germany's Florian Mayer. REUTERS/Thomas Peter 

Tennis - China Open Men's Singles First Round - Beijing, China - 04/10/16. Canada's Milos Raonic plays against Germany's Florian Mayer. REUTERS/Thomas Peter 

Tennis - China Open Men's Singles First Round - Beijing, China - 04/10/16. Canada's Milos Raonic plays against Germany's Florian Mayer. REUTERS/Thomas Peter 

Britain Tennis - Wimbledon - All England Lawn Tennis & Croquet Club, Wimbledon, England - 29/6/16 Austria's Dominic Thiem celebrates winning his match against Germany's Florian Mayer REUTERS/Andrew Couldridge 

Florian Mayer of Germany serves during his match against Juan Monaco of Argentina at the Wimbledon Tennis Championships in London, June 29, 2015. REUTERS/Stefan Wermuth 

Tennis - French Open - Roland Garros, Paris, France - 24/5/15
Men's Singles - Florian Mayer of Germany in action during the first round
Action Images via Reuters / Jason Cairnduff
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Tennis - French Open - Roland Garros, Paris, France - 24/5/15
Men's Singles - Florian Mayer of Germany in action during the first round
Action Images via Reuters / Jason Cairnduff
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