At the French Open, Ostapenko, then ranked 47th in the world, defeated Louisa Chirico, Monica Puig, Lesia Tsurenko, and Samantha Stosur.
She then faced Caroline Wozniacki in the quarterfinals.
Ostapenko came from a set down to defeat her, reaching her first Grand Slam semifinal.
1983
She beat Bacsinszky in three sets to reach the final, being the first unseeded female player to play in the final of the French Open since Mima Jaušovec in 1983 and the first Latvian player to reach the final of a major.
In the final against third-seeded Simona Halep, Ostapenko came back from being down a set and 3–0 to win her first professional title.
1997
Jeļena "Aļona" Ostapenko (born 8 June 1997) is a Latvian professional tennis player.
2007
She was the first Latvian female player to do so and first teenager in a decade to reach the French Open semifinals (the last was Ana Ivanovic in 2007), opposite Timea Bacsinszky on 8 June, the birthday of both players.
2014
She has also won fifteen singles titles and fifteen doubles titles on the ITF Women's Circuit, and she also won the junior singles event at the 2014 Wimbledon Championships.
In addition to her singles career, she has played as a member of the Latvia Fed Cup team.
Ostapenko won the singles event at the junior Wimbledon Championships and was ranked the No. 2 junior tennis player in the world in September 2014.
She made her WTA Tour main-draw debut at the Tashkent Open, having been awarded a wildcard.
At the Ladies Neva Cup, Ostapenko went through qualifying and won the biggest title up to then.
At Wimbledon, Ostapenko defeated the ninth-seeded Carla Suárez Navarro in straight sets (dropping only two games in the match and grabbing her first win over a top-ten player) in the first round before losing to Kristina Mladenovic.
At the US Open, she lost her second-round match to Sara Errani.
In September, she reached her first WTA Tour final at the Canadian Open, where she lost to Annika Beck.
She ended the season as the world No. 79.
She reached the final of the Premier 5 Qatar Ladies Open in Doha, beating world No. 8, Petra Kvitová, on the way.
She was beaten by Carla Suárez Navarro in the final, nevertheless she rose to No. 41 in the world rankings.
At the French Open, Ostapenko was seeded in the singles at a Grand Slam tournament for the first time in her career, but she dropped her opening match to Naomi Osaka.
At the Birmingham Classic, she beat Anastasia Pavlyuchenkova in straight sets in the first round, and two-time Wimbledon champion Petra Kvitová in the second before she was defeated by Madison Keys in the quarterfinals.
Ostapenko made the semifinals in mixed doubles at Wimbledon with Oliver Marach, before they fell to the eventual champions, Heather Watson and Henri Kontinen.
2016
Ostapenko made her Olympic debut at the 2016 Rio Summer Olympics but lost to Samantha Stosur in the first round.
She ended her season ranked No. 44 in the world.
At the Australian Open, she advanced to the third round of a major tournament for the first time, losing to Karolína Plíšková in three sets despite serving for the match in the third set.
At the Charleston Open, she reached the final losing to fellow 19-year-old Daria Kasatkina.
2017
Ostapenko won the 2017 French Open singles title, becoming the first player from Latvia to win a major singles tournament and the first unseeded player to win the French Open since 1933.
She has won eight WTA singles and seven doubles titles.
Fans in Latvia and elsewhere had always called her Aļona, but the name was unknown in the West until her win at Roland Garros in 2017.
She uses her legal name professionally in order to avoid administrative confusion.
2018
She has career-high WTA rankings of No. 5 in singles, achieved on 19 March 2018, and No. 7 in doubles, reached on 12 September 2022.
2020
Ostapenko was born in Riga to former Ukrainian footballer Jevgēnijs Ostapenko (d. 2020) and Latvian-Russian tennis coach and former player Jeļena Jakovļeva.
Jevgēnijs played professional football for Metalurh Zaporizhzhia in the Ukrainian city of Zaporizhzhia where Jeļena's grandmother lives.
Jeļena has one half-brother, Maksim, who lives in the United States.
She was introduced to tennis at age five by her mother and idolized Serena Williams while growing up.
She also started dancing at that age, going on to compete in the national ballroom dance championships of Latvia.
At the age of 12, she chose to focus on tennis, but she credits her good coordination and skilled footwork to the years she danced competitively.
Ostapenko speaks Latvian, Russian, and English.
Her legal name is Jeļena, but she is known to her family and friends as Aļona.
When she was born, her parents' desired name of Aļona was not on the Latvian name calendar, so she was named Jeļena after her mother.
Latvian authorities however, have claimed that there were no restrictions in place at that time to register any name, and that there had been some misunderstanding.
