Iga Swiatek looked rusty on her return after two months out but the world number two rallied for a 4-6, 7-5, 6-2 win over Barbora Krejcikova to kick-start her WTA Finals title defence in Riyadh on Sunday.
Poland’s Swiatek lost in the US Open quarterfinals in September and was leapfrogged in the world rankings by Aryna Sabalenka after opting to skip the WTA Tour’s Asian swing due to fatigue.
The 23-year-old, who is looking to reclaim top spot in the Saudi Arabian capital, dropped serve early and was unable to gain a foothold as Wimbledon champion Krejcikova ran away with the first set.
Krejcikova broke twice in the second set after two double faults by an increasingly off colour Swiatek, whose fans at the King Saud University Indoor Arena sensed a big upset and looked to lift the French Open champion.
Swiatek came out swinging from 3-0 down and moved ahead for the first time with a thumping backhand winner, before levelling the match at one set apiece.
She held to love for a 5-0 lead in the decider as Krejcikova struggled with a lower back issue and withstood a late charge to close out victory.
With Sabalenka defeating Zheng Qinwen on Saturday, Swiatek will need to retain the trophy after winning at least two round- robin matches to have any chance of overtaking the Belarusian and finishing as year-end world number one.
Former US Open champion Coco Gauff faces fellow American Jessica Pegula in the other Orange Group match on Sunday.
