Seita Watanabe advanced when David Barclay retired 6-1 3-0 in the M15 Gimcheon 2 qualifying round of 32.
Watanabe S. advanced when Barclay D. retired.
Seita Watanabe beat David Barclay 6-1 3-0 after David Barclay retired. Umpiry, "Seita Watanabe vs David Barclay — M15 Gimcheon 2 Qualifying Round of 32", https://umpiry.com/match/2019-06-17/barclay-vs-watanabe-m15-gimcheon-2-q32?utm_source=cite (as of 17 June 2019).