Luksika Kumkhum
Luksika "Luk" Kumkhum is a Thai tennis player. She turned professional in 2011, and reached her career-high singles ranking of world No. 66 on 19 November 2018. On 16 July 2018, she peaked at No. 86 of the WTA doubles rankings.
Career
In 2010, Kumkhum had won one ITF event in singles but three events in doubles. The next year she won five singles ITF events, all 10Ks, and two in doubles. In 2012, she won two singles and two doubles ITF events.2013
In 2013, she cracked the top 200 and started to play on the WTA Tour as well as the ITF Women's Circuit. Kumkhum qualified for the Australian Open where she defeated Sofia Arvidsson in the first round, she was then beaten by Jamie Hampton. She played the Malaysian Open where she qualified for the tournament and reached the quarterfinals defeating Olivia Rogowska and Eleni Daniilidou en route before falling to Ayumi Morita in the quarterfinals, she also reached the semifinals of the tournament where she partnered with Erika Sema, falling to Janette Husárová and Zhang Shuai in the semifinals. In April, she won the 25K event in Phuket, defeating Lisa Whybourn in the finals. She played the Roland Garros qualifying event where she defeated Zarina Diyas before falling to Sandra Záhlavová in the second qualifying round. She then suffered first-round losses at Nottingham, Birmingham and Wimbledon. Kumkhum's next event was the 100K event, President's Cup in Astana, where she defeated Eugeniya Pashkova, Noppawan Lertcheewakarn in the second round, and Ekaterina Bychkova in the quarterfinals before she lost to Nadiya Kichenok in the semifinals. In the doubles event she and Tamarine Tanasugarn reached the final before falling to first-seeds Nina Bratchikova and Valeria Solovyeva.2014
At the Australian Open, Kumkhum, ranked 87 in the world, caused a major upset when she defeated former Wimbledon champion Petra Kvitová in the first round, in three sets. This was the first time ever that Kumkhum had ever faced a top-ten opponent in her career. She then suffered first-round loss at the Pattaya Open from Julia Görges 4–6, 4–6.2018
Having qualified for the Australian Open, Kumkhum has progressed to the third round of a Grand Slam tournament for the first time. In the second round, she defeated former top-ten player Belinda Bencic, 6–1, 6–3.WTA finals
Doubles: 1 (1 runner-up)
| Result | W–L | Date | Tournament | Tier | Surface | Partner | Opponents | Score |
| Loss | 0–1 | 2017 Korea Open – Doubles| | Korea Open, Seoul, South Korea | International | Hard |  Peangtarn Plipuech |  Kiki Bertens  Johanna Larsson | 1–6, 4–6 |
WTA 125K series finals
Singles: 2 (2 titles)
ITF Circuit finals
Singles (15–9)
| Outcome | No. | Date | Tournament | Surface | Opponent | Score |
| Winner | 1. | 16 10 2010 | Pattaya, Thailand | Hard |  Emma Flood | 6–4, 6–3 |
| Runner-up | 1. | 23 10 2010 | Khon Kaen, Thailand | Hard |  Zhu Lin | 3–6, 2–6 |
| Runner-up | 2. | 7 11 2010 | Manila, Philippines | Hard |  Piia Suomalainen | 3–6, 3–6 |
| Runner-up | 3. | 4 12 2010 | Mandya, India | Hard |  Anastasiya Vasylyeva | 2–6, 6–3, 2–6 |
| Winner | 2. | 7 5 2011 | Bangkok, Thailand | Hard |  Ayu Fani Damayanti | 6–2, 6–2 |
| Winner | 3. | 14 5 2011 | Bangkok, Thailand | Hard | Peangtarn Plipuech | 6–1, 6–0 |
| Runner-up | 4. | 4 6 2011 | Bangkok, Thailand | Hard |  Marta Sirotkina | 4–6, 3–6 |
| Winner | 4. | 18 6 2011 | Pattaya, Thailand | Hard | Liang Chen | 6–3, 6–4 |
| Runner-up | 5. | 2 7 2011 | Pattaya, Thailand | Hard | Liang Chen | 6–2, 6–7, 5–7 |
| Winner | 5. | 6 11 2011 | Kuching, Malaysia | Hard | Nungnadda Wannasuk | 7–6, 6–3 |
| Winner | 6. | 20 11 2011 | Manila, Philippines | Hard | Zhao Yijing | 4–6, 6–4, 6–2 |
| Winner | 7. | 7 7 2012 | Pattaya, Thailand | Hard | Nungnadda Wannasuk | 6–2, 6–2 |
| Winner | 8. | 22 7 2012 | Astana, Kazakhstan | Hard | Nudnida Luangnam | 3–6, 6–3, 6–3 |
| Winner | 9. | 28 4 2013 | Phuket, Thailand | Hard |  Lisa Whybourn | 6–0, 7–5 |
| Winner | 10. | 24 11 2013 | Toyota, Japan | Carpet |  Hiroko Kuwata | 3–6, 6–1, 6–3 |
| Runner-up | 6. | 3 8 2014 | Wuhan, China | Hard | Wang Qiang | 2–6, 2–6 |
| Winner | 11. | 31 5 2015 | Xuzhou, China | Hard |  Chang Kai-chen | 1–6, 7–5, 6–1 |
| Runner-up | 7. | 29 November 2015 | Toyota, Japan | Carpet |  Jana Fett | 4–6, 6–4, 4–6 |
| Runner-up | 8. | 30 July 2016 | Wuhan, China | Hard | Wang Qiang | 5–7, 2–6 |
| Runner-up | 9. | 21 May 2017 | Incheon, South Korea | Hard |  Han Na-lae | 6–7, 5–7 |
| Winner | 12. | 29 July 2017 | Hua Hin, Thailand | Hard | Alisa Kleybanova | 7–5, 6–7, 6–3 |
| Winner | 13. | 19 August 2017 | Nonthaburi, Thailand | Hard | Yuan Yue | 7–5, 6–2 |
| Winner | 14. | 1 April 2018 | Kōfu, Japan | Hard |  Bianca Andreescu | 6–3, 6–3 |
| Winner | 15. | 8 April 2018 | Kashiwa, Japan | Hard | Bianca Andreescu | 6–3, 7–6 |
Doubles (12–7)
| Outcome | No. | Date | Tournament | Surface | Partner | Opponents | Score |
| Winner | 1. | 24 10 2010 | Khon Kaen, Thailand | Hard | Varatchaya Wongteanchai |  Huỳnh Phương Đài Trang Maya Kato | 6–4, 7–5 |
| Winner | 2. | 14 11 2010 | Manila, Philippines | Hard | Peangtarn Plipuech |  Ivana King Jasmin Schnack | 6–4, 7–5 |
| Winner | 3. | 12 12 2010 | Bangalore, India | Hard | Nungnadda Wannasuk | Chen Yi Kumiko Iijima | 7–6, 5–7, 6–4 |
| Runner-up | 1. | 19 6 2011 | Pattaya, Thailand | Hard | Napatsakorn Sankaew | Liang Chen Zhao Yijing | 6–1, 1–6, 5–7 |
| Winner | 4. | 6 11 2011 | Kuching, Malaysia | Hard | Nungnadda Wannasuk | Lu Jiaxiang Lu Jiajing | 6–4, 6–3 |
| Winner | 5. | 13 11 2011 | Manila, Philippines | Hard | Peangtarn Plipuech | Zhao Yijing Zheng Junyi | 6–3, 6–0 |
| Runner-up | 2. | 20 11 2011 | Manila, Philippines | Hard | Peangtarn Plipuech | Napatsakorn Sankaew Varunya Wongteanchai | 1–6, 6–3, 3–6 |
| Winner | 6. | 22 7 2012 | Astana, Kazakhstan | Hard | Varatchaya Wongteanchai | Veronika Kapshay Ekaterina Yashina | 6–2, 6–4 |
| Winner | 7. | 2 9 2012 | Tsukuba, Japan | Hard | Varatchaya Wongteanchai | Yurina Koshino Mari Tanaka | 6–2, 6–2 |
| Winner | 8. | 5 5 2013 | Gifu, Japan | Hard | Erika Sema | Nao Hibino Riko Sawayanagi | 6–4, 6–3 |
| Runner-up | 3. | 3 11 2013 | Taipei, Chinese Taipei | Hard | Chen Yi | Lesley Kerkhove Arantxa Rus | 4–6, 6–2, |
| Runner-up | 4. | 11 7 2014 | Bangkok, Thailand | Hard | Tamarine Tanasugarn | Varatchaya Wongteanchai Varunya Wongteanchai | 3–6, 6–4, |
| Runner-up | 5. | 28 November 2015 | Toyota, Japan | Carpet | Yuuki Tanaka | Akiko Omae Peangtarn Plipuech | 6–3, 0–6, |
| Winner | 9. | 2 April 2017 | Kōfu, Japan | Hard | Han Na-lae | Erina Hayashi Robu Kajitani | 6–3, 6–0 |
| Winner | 10. | 28 July 2017 | Hua Hin, Thailand | Hard |  Ksenia Palkina |  Naiktha Bains  Karin Kennel | 6–3, 2–6, |
| Winner | 11. | 31 March 2018 | Kōfu, Japan | Hard | Gao Xinyu | Erina Hayashi Momoko Kobori | 6–0, 2–6, |
| Winner | 12. | 17 June 2018 | Manchester, Great Britain | Grass |  Prarthana Thombare | Naomi Broady Asia Muhammad | 7–6, 6–3 |
| Runner-up | 6. | 20 October 2018 | Suzhou, China | Hard | Peangtarn Plipuech | Misaki Doi Nao Hibino | 2–6, 3–6 |
| Runner-up | 7. | 10 November 2018 | Shenzhen, China | Hard | Choi Ji-hee | Shuko Aoyama Yang Zhaoxuan | 2–6, 3–6 |