QUEBEC CITY: Top-seeded American Madison Keys withdrew from the WTA tournament in Quebec on Wednesday with a left wrist injury and was replaced in the draw by lucky loser Nadia Kichenok, organisers said. Keys said on her Facebook page that she was “really disappointed,” adding that she had hurt her wrist in practice in recent days.

Keys was coming off a fourth-round loss to Serena Williams at the US Open. The event has already seen several seeded players eliminated in the first round, including German Mona Barthel and compatriot Tatjana Maria and Belgian An-Sophie Mestach.