Yannick Hanfmann plays with an unseen handicap on the ATP circuit

German tennis player Yannick Hanfmann competes on the ATP tour with a hidden challenge: partial hearing loss.

Hanfmann, who has lived with this condition since birth, estimates his hearing is at about 60% of a typical person's. He told Bild in 2018 that he cannot truly grasp what he might be missing due to his hearing impairment. The ATP noted in a 2024 profile that Hanfmann himself is not fully aware of the extent of his disadvantage.

Currently ranked 25 and standing 1.93 meters tall, Hanfmann shares several traits with his opponent, Valentin Vacherot. Both players bypassed the traditional European junior tennis circuit, opting instead for American collegiate tennis before turning professional. They both play right-handed, use a two-handed backhand, and favor clay courts. Hanfmann secured a doubles title in Stuttgart in 2017, while Vacherot achieved his career-best singles title at a Masters 1000 event in Shanghai eight years later.

Despite these parallels and Hanfmann's hearing impairment, he has successfully carved out a place for himself on the professional circuit, demonstrating resilience and skill.