Leandro Riedi defeated Jan Choinski 6-3 6-4 in the Australian Open qualifying round of 128 on hard. The upset overturned the form book — Jan Choinski came in ranked #91.
Riedi L. took it in straight sets.
Leandro Riedi beat Jan Choinski 6-3 6-4. Umpiry, "Leandro Riedi vs Jan Choinski — Australian Open Qualifying Round of 128", https://umpiry.com/match/2026-01-13/choinski-vs-riedi-australian-open-q128?utm_source=cite (as of 13 January 2026).