![Roger Federer from Switzerland poses with a birthday cake presented to him following his match against Croatia's Ivo Karlovic at the Montreal Masters tennis tournament August 8, 2007. Federer is celebrating his Roger Federer from Switzerland poses with a birthday cake presented to him following his match against Croatia's Ivo Karlovic at the Montreal Masters tennis tournament August 8, 2007. Federer is celebrating his](https://c8.alamy.com/comp/2E7NMC7/roger-federer-from-switzerland-poses-with-a-birthday-cake-presented-to-him-following-his-match-against-croatias-ivo-karlovic-at-the-montreal-masters-tennis-tournament-august-8-2007-federer-is-celebrating-his-26th-birthday-wednesday-reuterschristinne-muschi-canada-2E7NMC7.jpg)
Roger Federer from Switzerland poses with a birthday cake presented to him following his match against Croatia's Ivo Karlovic at the Montreal Masters tennis tournament August 8, 2007. Federer is celebrating his
Swiss Tennis on Twitter: "✨4️⃣0️⃣✨ Happy Birthday, Maestro @rogerfederer and have a peRFect & wondeRFul day! #swisstennis #SupportTheSwiss https://t.co/wcGiZRD22X" / Twitter
![Roger Federer of Switzerland poses with a birthday cake following his 6-2 7-6 quarterfinal win over Max Mirnyi, at the Tennis Masters Canada Series in Montreal, August 8, 2003. Federer is celebrating Roger Federer of Switzerland poses with a birthday cake following his 6-2 7-6 quarterfinal win over Max Mirnyi, at the Tennis Masters Canada Series in Montreal, August 8, 2003. Federer is celebrating](https://c8.alamy.com/comp/2D3J8PG/roger-federer-of-switzerland-poses-with-a-birthday-cake-following-his-6-2-7-6-quarterfinal-win-over-max-mirnyi-at-the-tennis-masters-canada-series-in-montreal-august-8-2003-federer-is-celebrating-his-22nd-birthday-reutersshaun-best-sb-2D3J8PG.jpg)
Roger Federer of Switzerland poses with a birthday cake following his 6-2 7-6 quarterfinal win over Max Mirnyi, at the Tennis Masters Canada Series in Montreal, August 8, 2003. Federer is celebrating
![Swiss Tennis on Twitter: "🎉🎂🎁Have an amazing 37th Birthday and all the best, @rogerfederer ! 🎈🎇😍Enjoy your day! #SupportTheSwiss https://t.co/8rPe9hamoG" / Twitter Swiss Tennis on Twitter: "🎉🎂🎁Have an amazing 37th Birthday and all the best, @rogerfederer ! 🎈🎇😍Enjoy your day! #SupportTheSwiss https://t.co/8rPe9hamoG" / Twitter](https://pbs.twimg.com/media/DkD0h_tW0AAyq23.jpg)