Nicole Peterson advanced when Aimee Gibson retired 6-1 in the Sutton 10K qualifying round of 16.
Peterson N. advanced when Gibson A. retired.
Nicole Peterson beat Aimee Gibson 6-1 after Aimee Gibson retired. Umpiry, "Nicole Peterson vs Aimee Gibson — Sutton 10K Qualifying Round of 16", https://umpiry.com/match/2013-03-04/gibson-vs-peterson-sutton-10k-q16?utm_source=cite (as of 4 March 2013).