Zdenek Kolar defeated Michael Mmoh 2-6 6-1 7-6 in the US Open qualifying round of 128 on hard. The upset overturned the form book — Michael Mmoh came in ranked #151, defending last year's round of 128.
Kolar Z. came through in three sets.
Zdenek Kolar beat Michael Mmoh 2-6 6-1 7-6(1). Umpiry, "Zdenek Kolar vs Michael Mmoh — US Open Qualifying Round of 128", https://umpiry.com/match/2019-08-19/kolar-vs-mmoh-us-open-q128?utm_source=cite (as of 19 August 2019).