Elina Svitolina
Elina Mykhailivna Svitolina ( uk, Еліна Михайлівна Світоліна, ; born 12 September 1994) is a Ukrainian professional tennis player. She reached career-high rankings of world No. 3 in singles and 108 in doubles. Svitolina ...
defeated
Sloane Stephens
Sloane Stephens (born March 20, 1993) is an American professional tennis player. She achieved a career-best ranking of world No. 3 after Wimbledon in 2018. Stephens was the 2017 US Open champion, and has won seven WTA Tour singles titles in to ...
in the final, 3–6, 6–2, 6–2 to win the singles tennis title at the 2018 WTA Finals.
Caroline Wozniacki
Caroline Wozniacki (; born 11 July 1990) is a Danish former professional tennis player. She was ranked world No. 1 in singles for a total of 71 weeks, including at the end of 2010 and 2011. She achieved the top ranking for the first time on 11 ...
was the defending champion, but was eliminated in the round-robin stage.
Naomi Osaka
is a Japanese professional tennis player. She has been ranked world No. 1 in singles by the Women's Tennis Association (WTA) and is the first Asian player to hold the top ranking in singles. Osaka is a four-time Grand Slam singles champio ...
, Stephens, and
Kiki Bertens
Kiki Bertens (; born 10 December 1991) is a Dutch former professional tennis player. Her career-high WTA singles ranking was world No. 4, which she reached on 13 May 2019, becoming the highest ranked Dutch female player ever.
Her career-high do ...
made their debuts in the event.
This was the first time that the top four seeds were eliminated in the round robin stage, leaving the fifth to eighth seeds to qualify for the semifinals.
Seeds
''Notes:''
*
Simona Halep
Simona Halep (; born 27 September 1991) is a Romanian professional tennis player. She has been ranked world No. 1 in singles twice between 2017 and 2019, for a total of 64 weeks, which ranks eleventh in the history of the Women's Tennis Assoc ...
had qualified but withdrew due to back injury
Alternates
Draw
Finals
Red group
† Following WTA rules, Osaka's retirement against Bertens was counted as a straight-set loss in determining round robin standings.
White group
''Standings are determined by: 1. number of wins; 2. number of matches; 3. in two-player ties, head-to-head records; 4. in three-player ties, (a) percentage of sets won (head-to-head records if two players remain tied), then (b) percentage of games won (head-to-head records if two players remain tied), then (c) WTA rankings.''
References
Main Draw
{{DEFAULTSORT:2018 WTA Finals
2018 Singles
Eighteen or 18 may refer to:
* 18 (number), the natural number following 17 and preceding 19
* one of the years 18 BC, AD 18, 1918, 2018
Film, television and entertainment
* ''18'' (film), a 1993 Taiwanese experimental film based on the short ...
*Finals