Juan Martin del Potro defeated Daniel Koellerer 6-3 6-2 in the US Open qualifying round of 32 on hard.
del Potro J. took it in straight sets.
Juan Martin del Potro beat Daniel Koellerer 6-3 6-2. Umpiry, "Juan Martin del Potro vs Daniel Koellerer — US Open Qualifying Round of 32", https://umpiry.com/match/2006-08-25/koellerer-vs-potro-us-open-q32?utm_source=cite (as of 25 August 2006).