Masataka Hamaguchi defeated Matthew Yuki Yoshimura 6-0 6-2 in the M15 Karuizawa 1 qualifying round of 32 on clay.
Hamaguchi M. took it in straight sets.
Masataka Hamaguchi beat Matthew Yuki Yoshimura 6-0 6-2. Umpiry, "Masataka Hamaguchi vs Matthew Yuki Yoshimura — M15 Karuizawa 1 Qualifying Round of 32", https://umpiry.com/match/2019-05-26/hamaguchi-vs-yoshimura-m15-karuizawa-1-q32?utm_source=cite (as of 26 May 2019).