Jan Choinski defeated Alexander Bublik 7-5 6-4 in the Roland Garros qualifying round of 128 on clay. The upset overturned the form book — Alexander Bublik came in ranked #22, but Jan Choinski had been the form player, winning 4 of their last 4 on clay.
Choinski J. took it in straight sets.
Jan Choinski beat Alexander Bublik 7-5 6-4. Umpiry, "Jan Choinski vs Alexander Bublik — Roland Garros Qualifying Round of 128", https://umpiry.com/match/2018-05-21/bublik-vs-choinski-roland-garros-q128?utm_source=cite (as of 21 May 2018).