Roger Federer continues his first French Open campaign in four years on Friday with a third-round match against Norway's Casper Ruud, while reigning champion Rafael Nadal faces Belgian David Goffin.
Alexander Zverev extended his terrible clay-court run, falling 7-5, 7-5 to Italian wild card Matteo Berrettini in the second round.
Naomi Osaka emerged from an error-strewn first set against crafty Latvian Anastasija Sevastova to win 4-6, 6-3, 6-4.
Naomi Osaka defeated Lativia's Anastasija Sevastova to reach the Brisbane International semi-finals.
Svitolina looked sluggish after playing the two longest matches in the tournament against Wozniacki and Bertens in the semi-finals.
Svitolina has looked on a mission at the WTA Finals in an effort to make amends for a lackluster early exit last year.
Wang Qiang wrapped up the biggest win of her season on Saturday after an overnight rain delay forced her to wait to claim victory over Elina Svitolina.
Elina Svitolina, the world number four, has now successfully defended three career titles, in Baku, Dubai and also Rome.
Elina Svitolina will be bidding to win her eighth successive final dating back to last season as she bids for a third title this year.
Angelique Kerber and Elina Svitolina will face off in a Dubai Championships semi-final on Friday after both ran down opponents in quick straight-sets wins.
Elina Svitolina had ended the year ranked sixth in the world, but will climb two places when the new rankings are released on Monday.
Svitolina held off 42nd-ranked Czech Katerina Siniakova 6-0, 6-7 (5/7), 6-3 while Thiem finished off Australian Alex de Minaur 6-4, 6-1, 6-1 under sunny skies.
Five tennis players have a chance to grab the world No 1 ranking at this week's Cincinnati Open.
Agnieszka Radwanska was given a wild card berth to get into the Connecticut Open, claiming her second title of 2016 and the 19th of her WTA Tour
Elina Svitolina eased past China's Lin Zhu 6-3, 6-3, while Eugenie Bouchard then outpaced Naomi Broady in the second semis.
Second seed Elina Svitolina had to fight hard to defeat Japan's Risa Ozaki 6-1, 3-6, 6-0 at the Malaysian Open.
Sara Errani was a 2013 finalist at the Dubai Tennis Championships, losing to Petra Kvitova of Czech Republic.
The contract of Justine Henin says that she will act as a special consultant to Elina Svitolina, currently ranked 21st in the world.