It has been a bitter-sweet day for Australia's men at the Cincinnati Open, with Alex de Minaur's surprise loss more than offset by Adam Walton's stunning victory over a former world No.1.
There was also a strong win for Alexei Popyrin as the players fine-tune their game before this month's US Open.
Walton defied his world ranking of No.85 to beat Russian 12th seed Daniil Medvedev in three sets in the first meeting between the pair.
