page_title: 2018 WTA Finals
section_title: Singles
hierarchical_section_title: 2018 WTA Finals / Qualified players / Singles
caption_attribution_description: English: Naomi Osaka won the women's singles event of the 2018 US Open
context_page_description: The 2018 WTA Finals, also known by its sponsored name BNP Paribas WTA Finals Singapore, was a women's tennis tournament held in Kallang, Singapore. It was the 48th edition of the singles event and the 43rd edition of the doubles competition. The tournament was contested by eight singles players and eight doubles teams. This was the final year for Singapore to hold this tournament.
context_section_description: On 13 August, Simona Halep became the first qualifier.
  Simona Halep began the year by winning the Shenzhen Open, defeating Kateřina Siniaková in the final in three sets. She then competed at the Australian Open and reached the finals after saving match points in her third round match against Lauren Davis and semifinal match against Angelique Kerber. However, she lost in the final to Caroline Wozniacki in three tight sets, also losing the number 1 ranking to Wozniacki. She then lost in the semifinals of her next two events, the Qatar Open and BNP Paribas Open to Garbiñe Muguruza and Naomi Osaka, respectively. At the Miami Open, she fell in the third round to Agnieszka Radwańska.
  At the start of the clay season, Halep did not have good results, only reaching the quarterfinals at the Porsche Tennis Grand Prix and the Mutua Madrid Open, with both losses coming in straight sets to CoCo Vandeweghe and Karolína Plíšková, respectively. Halep was able to bounce back at the Internazionali BNL d'Italia reaching the final but losing to Elina Svitolina, winning only four games in the match. At the French Open, Halep won the biggest title of her career and her first Grand Slam title, defeating reigning US Open champion Sloane Stephens after coming back from a set down. However, Halep did not have much luck at the grass courts of Wimbledon, losing in the third round to Hsieh Su-wei after failing to take advantage of a set lead.
  At the American hard court season, Halep started out by reaching back-to-back finals. She won the Rogers Cup by defeating Stephens again in a rematch of the French Open final. However, she lost the final of the Western & Southern Open to Kiki Bertens despite having a match point. This loss was a start of a bad stretch for the Romanian as she became the first top seed to lose in the first round of the US Open when she fell to Kaia Kanepi. She then lost her opening round matches at the Wuhan Open and China Open, giving her a four match losing streak coming into the WTA Finals. However, she announced that she would withdraw from the event because of an ongoing back injury. Even though, Halep secured the year-end No. 1 for a second consecutive year.
  On 10 September, Angelique Kerber became the second qualifier.
  Angelique Kerber began her season at the Hopman Cup to represent Germany with Alexander Zverev but lost in the final to Switzerland. At the Sydney International, Kerber claimed her first title since winning the 2016 US Open defeating local favorite Ashleigh Barty in straight sets. At the Australian Open, Kerber was able to reach the semifinals of a slam for the first time since her US Open triumph but lost to Simona Halep in three sets after failing to convert two match points she had in the final set. She then played in the middle east, where lost in the quarterfinals of the Qatar Total Open losing to then World no. 1 Caroline Wozniacki in three sets and to Elina Svitolina at the Dubai Tennis Championships in the semifinals. She then reached back-to-back quarterfinals at the BNP Paribas Open and Miami Open falling to Daria Kasatkina and Sloane Stephens, respectively.
  During the clay court season, Kerber had good results reaching the quarterfinals of Internazionali BNL d'Italia and French Open losing to eventual champions Svitolina and Halep, Respectively. At the grass season, Kerber suffered an upset in the hands of Alison Riske in the first round of the Mallorca Open, but she bounced back by reaching the semifinals of Eastbourne International losing to top seed Caroline Wozniacki. At Wimbledon, Kerber won her third grand slam title and her first at the event defeating Serena Williams in the final in straight sets. This means Kerber has won 3 of the 4 slams, only missing the French Open. After her slam triumph, Kerber had poor results winning only 6 of her next 11 matches, losing early in Rogers Cup, Western & Southern Open, US Open, Wuhan Open and China Open, failing to reach a single quarterfinal.
  On 2 October, Naomi Osaka was announced to be making her debut at the event as the third qualifier.
  Naomi Osak
caption: Naomi Osaka won her first slam title.
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