Aryna Sabalenka's consistency at the Grand Slams is unrivalled in the women's game but, going into the US Open semi-finals, her three titles feels below par.

American in to last four after 6-3, 6-3 win over world No 62 Pegula to face either Aryna Sabalenka or Marketa Vondrousova

Aryna Sabalenka's consistency at the Grand Slams is unrivalled in the women's game but, going into the US Open semi-finals, her three titles feels below par.