Chia Yen Tsai defeated Hans Grobecker 6-2 6-1 in the Japan F5 round of 32 on hard.
Tsai C. took it in straight sets.
Chia Yen Tsai beat Hans Grobecker 6-2 6-1. Umpiry, "Chia Yen Tsai vs Hans Grobecker — Japan F5 Round of 32", https://umpiry.com/match/2000-05-15/grobecker-vs-tsai-japan-f5-r32?utm_source=cite (as of 15 May 2000).