Stefanos Tsitsipas underwent surgery on his right elbow in Switzerland and is expected to be back in action in a couple of weeks. He posted a picture from the hospital bed and shared a message with his fans.

Tsitsipas said:

Things often get tougher before they get easier but with each struggle we get an opportunity to create our own unique story.

Some days life is all about your dreams, hopes and visions for the future. There are also days where life is just about putting one foot in front of the other and that’s okay too.

To all the fans, thank you for your continuous support and encouragement.

Focused on a healthier and happier future.

Next stop, pre-season in Dubai two weeks from now and then looking forwards to Australia.

Though Tsitsipas didn’t win a grand slam in 2021, he still had a great season. He reached the semifinals at the Australian Open and the finals at the French Open. He finished the year ranked world number 3, behind Novak Djokovic and Daniil Medvedev.

Hawk-Eye is ubiquitous in tennis. It’s used by most  major tournaments for line calling and is a name that’s familiar to tennis fans. But there is another company, FoxTenn, that has a competing technology that is superior to Hawk-Eye but has struggled to get traction.

FoxTenn is a Spanish company, whose product works on clay (and hard courts) and does not rely on simulation. FoxTenn is used in fewer tournaments compared to Hawk-Eye.

Differences between Hawk-Eye and FoxTenn

Hawk-Eye is owned by Sony and was developed by  Paul Hawkins. It uses a dozen cameras placed around the court to track ball movement. The system has a margin of error of 3 millimeters in its simulation.

FoxTenn has 40 cameras around the court with scanners and lasers. It does not use simulation and is generally considered to be more accurate than Hawk-Eye.