Poland's Iga Swiatek strode imperiously into the fourth round at Wimbledon on Saturday, with a dominant 6-2 6-3 win over an apparently out-of-sorts Danielle Collins. The former world number one, eager to show she can be a force on grass,

Danielle Collins temporarily forgot the rules of tennis in a comical moment against Iga Swiatek on Saturday. The American, while preparing to face down a serve from the Pole, seemed to be the only person inside Centre Court who did not realise she had made a mistake.

Iga Swiatek has just earned one of her most impressive grass wins after ousting her old rival Danielle Collins 6-2 6-3 to routinely book a Wimbledon round-of-16 spot but also get a revenge over the former world No. 7. Two months ago, the Polish tennis star got bounced by the American in the Rome Open third round 1-6 5-7.