Nineteen-year-old Czech tennis talent Jan Kumstát, after winning three challengers and a surprising jump in the rankings, is trying to qualify for the prestigious Next Gen Finals and shares how mental preparation and the decision to focus on tennis after graduating high school have helped him. #tenis #mladýtalent #mentálnítrénink (translated)
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Už přerostl Berdycha. Český obr letí vzhůru i díky zásadnímu rozhodnutí před třemi lety
