#3 - Elina Svitolina
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Despite flopping at Grand Slams and Premier Mandatory events, Elina Svitolina has consistently performed well at the Premier 5 events. She competed at the 2017 WTA Finals but lost in the group stage following a close defeat to Caroline Garcia.
But, the 24-year-old Ukrainian hasn't quite replicated her breathtaking performance at the Italian Open in the rest of the season. Svitolina is 14-9 since her Italian Open title, with just 1 semifinal showing in 9 tournaments. To add to her poor performances this season, Svitolina has a forgettable record against her White Group compatriots (3-1 vs Wozniacki, 1-7 vs Kvitova, 2-5 vs Pliskova).
But, in her 2nd consecutive WTA Finals appearance, she won't be leaving any stone unturned to improve her performance from 2017. And, if she gets in the zone, she could do some real damage in Singapore and come out as the surprise package despite her obvious loss in form.
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