German tennis player Yannick Hanfmann played college tennis at the University of Southern California. He has been hearing impaired since birth.

In 2018, he entered the top 100 in world rankings after winning the challenger title at Braunschweig, Germany. His sponsors are Le Coq Sportif and Head. He has earned over

Yannick Hanfmann’s Sponsors

Le Coq Sportif

He has a clothing sponsorship deal with Le Coq Sportif

Head

He has a racquet sponsorship contract with Head

Jan Choinski’s ATP career hasn’t been as good as his junior career. As a junior, Choinski reached the semifinals at the 2014 US Open and reached a peak ranking of world number 17.

Playing for Britain but was born in Germany, Choinski made his ATP debut in 2016. He represented Germany until 2018  when he switched his allegiance to Britain.

He found some success on the ITF and Challenger tours. On the ATP tour, he has had to play qualifying rounds due to his low rankings. 

His sponsors are AMC and Babolat. He has earned over $300,000 in his career

Jan Choinski’s Sponsors

AMC

Choinski has a clothing contract with the AMC brand

Babolat

He has a racquet sponsorship contract with Babolat.