Katie Boulter

2008–2013: Steady rise

Following in the path of Anna Kournikova, Boulter showed promise in 2008 when she won the Lemon Bowl in Rome, aged 11. She went on in 2011, aged 14, to become a finalist in the Junior Orange Bowl Tennis Championships in Coral Gables, Florida. Past finalists have included Andy Murray and Caroline Wozniacki. She was awarded the Aegon Junior Player Award that month.

Boulter claimed her first senior doubles title at a $10k event in Sharm El Sheikh in November 2013.

2014: Doubles success, first senior singles title

In January 2014, Boulter went on to have further doubles success and was a finalist at the Australian Open girls' doubles event with Ivana Jorović. In May 2014, in Sharm El Sheikh, Boulter won her first senior singles title over fellow Briton Eden Silva. She also won the doubles title at the same event partnering Nina Stojanović, to whom she had lost a previous final in singles. A month later, Boulter was given a wild card for Wimbledon qualifying, losing in the first round to Italian Alberta Brianti in a three-set match which lasted two-and-a-half hours.

2018: 2nd round at Wimbledon, top 100 debut

2018 became her most successful tennis year. She won her first $25k singles title at the event in Óbidos, Portugal in April. In May, Boulter then won a further singles title at the $60k event in Fukuoka, Japan. Despite falling in the first round of qualifying for the French Open, Boulter carried her good form into the grass-court season, She received a wild card for the Nottingham Open and reached her first WTA Tour quarterfinal there. In July 2018, she received a wildcard into the $100k grass-court event in Southsea, England where she reached the final and fell to Kirsten Flipkens.

She then received a wildcard into the Wimbledon main draw, where she won her first-round match over Veronica Cepede Royg. She lost in the second round to Naomi Osaka, in straight sets.

She ended the year ranked 100th.

2019: Australian Open first win

Boulter began the 2019 season in Hobart, Tasmania where she did not qualify, losing to Greet Minnen in three sets. Her next tournament was the Australian Open. She defeated Ekaterina Makarova, in three sets, with the first instance in the Australian Open of a third-set tiebreak, winning the tiebreak 10–6. However, her run ended in the second round with a straight-set defeat by Aryna Sabalenka.

Her next tournament was the St. Petersburg Ladies' Trophy during which she defeated Bernarda Pera, Katarina Zavatska and Ysaline Bonaventure in the qualifiers. She then lost to Ekaterina Alexandrova in three sets. At the Mexican Open, she defeated Conny Perrin, in straight sets, before retiring to fifth seed Sofia Kenin. At the Miami Open, entering as the sixth qualifying seed, she lost to Marie Bouzková in straight sets.

In April, Boulter suffered a spinal stress fracture while playing for Great Britain in the Fed Cup.

2020–2021: Another Wimbledon win

At the 2020 Australian Open, she lost in the first round to Elina Svitolina. At the 2021 Australian Open, she suffered a first-round loss against Daria Kasatkina. At Wimbledon, she beat qualifier Danielle Lao before she lost to Aryna Sabalenka in three sets, in the second round. At the 2021 US Open, she lost in the first round to Liudmila Samsonova.

2022: First top-10 wins, Grand Slam third round

Having won an ITF tournament in February 2022, Boulter had to retire from the WTA event in Lyon in March due to a leg injury.

Boulter missed the clay-court season, but returned at the Nottingham Open in June where she came through qualifying to defeat Tatjana Maria in the first round before losing to Ajla Tomljanović. Granted a wildcard for the Birmingham Classic, she defeated Alison Riske (first top-40 win) and Caroline Garcia, before losing to Simona Halep. At Eastbourne, she was also handed a wildcard and defeated fourth seed and world No. 7, Karolina Plíšková, for her first top-10 win. She lost her last 16 match against Petra Kvitová in three sets.

At Wimbledon, Boulter again upset Plíšková in three sets to advance to the third round of a major for the first time in her career. In round three, Boulter lost to Harmony Tan, in straight sets.

2023: British No. 1, first WTA title, major 3rd rounds

Boulter started new season by winning the $60k Canberra International event.

She became the British player No. 1 on 12 June 2023, following a semifinal showing at the Surbiton Trophy. She reached the quarterfinals at the Nottingham Open as one of four British players for a historic first at a WTA event. She went one step further to reach her first WTA Tour semifinal with a win over compatriot Harriet Dart. She defeated another Brit Heather Watson to set up an all-British final with Jodie Burrage, the first since 1977. As a result, she returned to the top 100 in the rankings at No. 77 on 19 June 2023. She had won her first WTA Tour title, after defeating Burrage in the final.

She received a special exempt entry into the next UK tournament in Birmingham, but lost in the first round to Zhu Lin in straight sets.

At the Wimbledon Championships, she defeated Australian Daria Saville in the first round and Bulgarian Viktoriya Tomova in the second, before she lost to Elena Rybakina in an under-one-hour match. With Alex de Minaur in mixed doubles, she also finished in the second round.

Boulter came through two rounds of qualifying to gain a place in the main draw of the Canadian Open in Montreal. She won her first-round match against Rebecca Marino, but lost in round two to Coco Gauff. This result improved Boulter's singles ranking to a career high of 60, on 14 August 2023.

At the US Open, she entered the main draw via her ranking for the first time in her career. In the first round, she defeated Diane Parry in straight sets for her first-ever main-draw win at Flushing Meadows, and then beat Chinese player Wang Yafan, in three sets, in the second round. Boulter lost to Peyton Stearns in round three, in two sets, but reached a new career-high WTA ranking of 50 on 11 September 2023.

2024: First WTA 500 title & top 30

Boulter participated in the British team for the 2024 United Cup. She defeated Jessica Pegula in the round-robin stage but the team was eliminated before the knock-out phase. She then reached the second round of the Australian Open where she lost to Zheng Qinwen. Boulter played the Linz Open where again she had finished in round two, after losing to Anastasia Pavlyuchenkova.

At the San Diego Open, the unseeded Boulter defeated Lesia Tsurenko, second seed Beatriz Haddad Maia, seventh seed Donna Vekić, and third seed Emma Navarro to reach her first WTA 500 final. In the final, she defeated the sixth seeded Marta Kostyuk achieving her first win at this level and taking her ranking into the top 30.