His patience combined with the power of his returns, makes him a formidable opponent for many of the more established players on the world of tennis.
Some were unable to qualify for the event, while others detested the restrictive conditions in Japan.
6 Diego Schwartzman of Argentina and No.
13, 2021, in Indian Wells, Calif.
Ruud laughs as he reminisces back to when he faced his friend Mikael Ymer of Sweden at the under-14 European Championship and neither player could even crack an egg with their forehands, resulting in endless moonball rallies.
16 on 10 May 2021.