Jannik Sinner took time to get his engine going before motoring into the French Open quarter-finals while defending champion Iga Swiatek raced through on Sunday as scheduling at the Grand Slam came under scrutiny after Novak Djokovic's overnight marathon.

Jannik Sinner, Iga Swiatek race to French Open quarters as scheduling comes under scrutiny

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Jannik Sinner, Iga Swiatek race to French Open quarters as scheduling comes under scrutiny