Aryna Sabalenka became the first player to secure a semi-final spot at the WTA Finals as she defeated a resilient Jasmine Paolini in straight sets.

Top seed Sabalenka won 6-3 7-5 in a victory that also confirmed Elena Rybakina’s elimination from the season-ending tournament in Riyadh, Saudi Arabia.

Earlier on Monday, Kazakhstan’s Rybakina was beaten 7-6 (7-4) 3-6 6-1 by Olympic champion Zheng Qinwen for her second defeat at the Finals, and required a Paolini victory to keep her hopes alive.

But a gritty win over the Italian – which saw her save two set points – put Sabalenka one step closer to sealing a maiden WTA Finals title, as well as the year-end world number one ranking.

Should she defeat Rybakina in her final Purple Group match on Wednesday, the Belarusian will remain top of the standings into 2025, out of the reach of Iga Swiatek.

“The whole match was tough,” said Sabalenka, 26. “[Paolini] is such a great player, putting so much pressure [on me] and moving well.”

An early double break of serve saw Sabalenka – a two-time Grand Slam champion in 2024 – hit the ground running against Paolini, and while the 28-year-old fourth seed cancelled out one of those breaks, she could do little to challenge her big-hitting opponent.

The second set, however, told a different tale. Though Sabalenka reeled off four consecutive games after an early break for Paolini, she grew frustrated as the Italian – enjoying a breakthrough season on the WTA Tour – mounted a comeback to go 5-4 ahead.

But after saving two set points, a switch flicked for Sabalenka, immediately breaking Paolini’s serve once more before wrapping up the match at the first time of asking.

“The second set was quite tricky, I was just trying to stay aggressive, to show her that I am going to fight for this set no matter what,” Sabalenka added.

“I’m really happy to close this match in straight sets.”

The WTA Finals are being held in Saudi Arabia for the first time – a move which has been criticised by some because of the country’s human rights record.

This year’s tournament has record prize money, with the singles champion set to collect about £4m.

In the Orange Group, Jessica Pegula will face Barbora Krejcikova on Tuesday before defending champion Swiatek plays Coco Gauff.