- Briton goes down 7-6 (0), 6-2 to Italian world No 29
- Defeat is latest blow to US Open preparations
Emma Raducanu made a first-round exit at the National Bank Open in Toronto after losing in straight sets to defending champion Camila Giorgi.
The world No 10 and ninth seed Raducanu was beaten 7-6 (0), 6-2 by the Italian world No 29, who won the tournament in Montreal last year.