Yasufumi Yamamoto defeated Wei Ju Chen 6-3 7-6 in the Japan F4 round of 32 on carpet. The result followed the form book — Yasufumi Yamamoto came in leading the head-to-head 2–1. Yasufumi Yamamoto extended the head-to-head to 3–1.
Yamamoto Y. took it in straight sets.
Carpet: Yamamoto Y. leads 2–0 · Hard: level 1–1
Yasufumi Yamamoto beat Wei Ju Chen 6-3 7-6. Umpiry, "Yasufumi Yamamoto vs Wei Ju Chen — Japan F4 Round of 32", https://umpiry.com/match/1998-10-07/chen-vs-yamamoto-japan-f4-r32?utm_source=cite (as of 7 October 1998).