Grace Min defeated Polona Hercog 6-1 6-2 in the Roland Garros qualifying round of 64 on clay. The upset overturned the form book — Polona Hercog came in defending last year's round of 128.
Min G. took it in straight sets.
Grace Min beat Polona Hercog 6-1 6-2. Umpiry, "Grace Min vs Polona Hercog — Roland Garros Qualifying Round of 64", https://umpiry.com/match/2013-05-23/hercog-vs-min-roland-garros-q64?utm_source=cite (as of 23 May 2013).