Poland's Iga Swiatek serves the ball to Switzerland's Belinda Bencic (not in photograph) during their women's singles tennis match on the seventh day of the 2023 Wimbledon Championships at The All England Tennis Club in Wimbledon, southwest London, on July 9, 2023. (PHOTO / AFP)

Iga Swiatek's new-found love of grass will face a stern test when she meets Elina Svitolina in the Wimbledon quarter-finals on Tuesday as the world number one continues her bid to conquer the final frontier and win her first title on the surface.

Four-time Grand Slam champion Swiatek has gone from strength to strength at Wimbledon this year, reaching the last eight for the first time despite her preparations for the tournament being less than ideal.

The Pole, who won her third French Open title last month, suffered from fever and possible food poisoning before the start of Wimbledon and had to withdraw from the semi-finals of the Bad Homburg Open.

In Elina Svitolina, Iga Swiatek faces a former Wimbledon semi-finalist, who also secured a hard-fought victory on Sunday, beating Belarusian Victoria Azarenka 2-6 6-4 7-6(9)

But she recovered in time for the grasscourt Grand Slam, winning her first three matches in straight sets before saving two match points to claw out a 6-7(4) 7-6(2) 6-3 victory against Olympic champion Belinda Bencic in the fourth round.

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"It gives me belief. I don't know, more experience, for sure, because Belinda is a really, really great player," top seed Swiatek, a former junior champion at Wimbledon, told reporters on Sunday.

"It wasn't an easy match for sure today. I'm just happy that I won it because it feels I'm going in the right direction."

In Svitolina, Swiatek faces a former Wimbledon semi-finalist, who also secured a hard-fought victory on Sunday, beating Belarusian Victoria Azarenka 2-6 6-4 7-6(9).

"I think she's that kind of player who is patient," Swiatek said of 28-year-old Ukrainian wild card Svitolina.

"She has enough experience to have all the skills to play defence, play offence. She won so many big tournaments, like WTA Finals... She's a really solid player. So I have to be ready for everything."

READ MORE: WTA: Iga Swiatek wins first grass-court match in 2023

The other women's match on Tuesday features fourth-seeded American Jessica Pegula facing Czech Marketa Vondrousova, with both players contesting their first Wimbledon quarter-final.