The Tokyo Olympics opening ceremony might have hogged all the limelight, but thats not stopping social media from celebrating the legendary Roger Federer's birthday. The Swiss veteran, who didn't participate in the Tokyo Olympics, has turned 40 today. The eight-time Wimbledon champion is currently in the last leg of his playing career, but his craze only multiplying as we speak. Here's how people on Twitter celebrated the veteran's birthday.

To start with, let's hear what Novak Djokovic has to say:

Federer won the silver medal in men's singles at the 2012 London Olympics and gold old in men's doubles at the 2008 Beijing Games. The legend, who has won 20 Grand Slam men's singles titles, a record he shares with his great rivals Rafael Nadal and Novak Djokovic, has begun rehabilitation and hopes to return to action soon.

"I have already begun rehabilitation in the hopes of returning to the tour later this summer. I wish the entire Swiss team the best of luck and I will be rooting hard from afar. As always, Hopp Schwiz!" he said last month.

Federer was knocked out of Wimbledon by Poland's Hubert Hurkacz in the quarter-finals. Hurkacz beat the legend in straight sets to reach the semi-final. In the first round of the tournament, Federer survived a scare before France's Adrian Mannarino retired due to injury. In 2020, Federer had two knee surgeries. He even had to withdraw from French Open despite winning three matches to save himself for Wimbledon.

Federer has been dealing with knee issues for a while now. He had pulled out of French Open this year to help improve his condition before the Wimbledon.