Issei Okamura defeated Caio Silva 6-1 6-0 in the China F2 round of 32 on clay.
Okamura I. took it in straight sets.
Issei Okamura beat Caio Silva 6-1 6-0. Umpiry, "Issei Okamura vs Caio Silva — China F2 Round of 32", https://umpiry.com/match/2017-02-20/okamura-vs-silva-china-f2-r32?utm_source=cite (as of 20 February 2017).