Williams set for toughest test yet against brilliant Svitolina in US Open Semi-Finals

Williams faces off against the Ukrainian who has gone somewhat under the radar as such at Flushing Meadows due to the performances of her opponent, potential final opponent Bianca Andreescu and the likes of Naomi Osaka and Ashleigh Barty being dumped out.

Last tie for Svitolina, she was excellent against Johanna Konta defeating her 6-4, 6-4 and is the highest ranked player left in the Women's draw, will she finally live up to her promise that she has shown in previous Premier events?

Her opponent talked her up ahead of the match saying that she doesn't make a lot of mistakes so she has to be ready to play well against her.

"Elina is obviously a fighter, she gets a lot of balls back," said Williams.

"She doesn't make a lot of mistakes. She's one of those players that does everything really well so I have to do everything well, too."

Williams has eased past the likes of Maria Sharapova, Petra Martic and Qiang Wang so far and has only been pushed so far by Caty McNally and Svitolina herself knows she has to take her chances if Serena goes off the boil.

"I have to react quickly and try to take my chances when I have them," Svitolina added.

"I have played some big hitters in this tournament and I have to react quickly with my feet and with my shots. Then when I have the opportunity, go for it."

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