Magdalena Frech

Fręch made her WTA Tour debut at the Katowice Open in doubles, partnering with Katarzyna Pyka.

Fręch started 2018 season in Auckland where she lost in qualifying (in the first round) to Sachia Vickery, in straight sets. She then took part at the first Grand Slam qualifying in her career - at the Australian Open. She beat Miyu Kato, Sofya Zhuk and Kayla Day, and became one of the 12 qualifiers, making her main-draw debut at the Grand Slam championship. In the first round, she lost to eventual quarterfinalist Carla Suárez Navarro, in straight sets. At the end of January, Fręch played at the $60k Andrézieux-Bouthéon event where she defeated Conny Perrin in three sets, Chloé Paquet in two and Vitalia Diatchenko (6–3, 2–2 ret.). In the semifinals, she lost to eventual champion Georgina García Pérez, in three sets. In February, she started at the Hungarian Ladies Open where she came through the qualifying competition by defeating Çağla Büyükakçay in three, and Anna Blinkova in straight sets.

She made her top 100 debut at No. 99 on 18 October 2021, following her qualification at the Indian Wells Open and first-round win over Zheng Saisai. She lost to top seed Karolína Plíšková.

In 2022, she played again at Indian Wells, entering into the main draw as a lucky loser and winning against Mayar Sherif, before losing to 30th seed Markéta Vondroušová.

At Wimbledon, she reached the third round of a Grand Slam for the first time in her career at Wimbledon, in singles and in doubles.

In 2023, she again entered the Indian Wells Open as a lucky loser, and won her third match at this tournament defeating Maryna Zanevska, before losing to fourth seed Ons Jabeur. At the Miami Open, she entered directly into the second round of the main draw, again as a lucky loser, after the late withdrawal of 26th seed Zhang Shuai. She defeated wildcard player Erika Andreeva to reach the third round at a WTA 1000-level event for the first time in her career.

She qualified for her next WTA 1000, the China Open, on her debut. As a result, she reached a career-high year-end ranking of No. 63, on 6 November 2023.

She reached the third round at the 2024 Australian Open defeating Daria Saville and 16th seed Caroline Garcia, her first top-20 career win. She defeated qualifier Anastasia Zakharova to reach the fourth round of a major for the first time in her career. As a result, she reached a new career-high ranking, at world No. 51.

At the WTA 1000 Dubai Championships, she reached the round of 16 as a qualifier, defeating 14th seed Ekaterina Alexandrova, her second top-20 win, and Petra Martić. She lost to fourth seed Elena Rybakina in three sets. As a result, she moved into the top 50 of the rankings.

In June, Fręch reached the quarterfinals at the Nottingham Open, before losing to eventual champion Katie Boulter.

In July, at the Prague Open, she defeated third seed Anhelina Kalinina in the quarterfinals. She reached a historic first all-Polish WTA Tour final in the Open Era after 16 years old wildcard Laura Samson's retirement. She lost her first final to compatriot Magda Linette, in straight sets.

On her debut at the Cincinnati Open where she qualified for the main draw, she recorded her first win over Marie Bouzková before losing in the second round to Olympic champion, Zheng Qinwen. She followed this good showing by reaching the quarterfinals at the newly upgraded WTA 500 Monterrey Open where she lost to second seed Emma Navarro.

Seeded fifth at the Guadalajara Open, she reached her first WTA 500 final with wins over Emina Bektas, Ashlyn Krueger, wildcard player Marina Stakusic and fourth seed Caroline Garcia. Next, she defeated qualifier Olivia Gadecki in straight sets to lift her first WTA Tour title. As a result, she moved into a new career-high in the top 35 on 16 September 2024, becoming the Polish No. 2 women's player ahead of Magda Linette. She became the ninth first-time titlist on the WTA Tour. She also became the fourth Polish woman to win a tour-level title after Agnieszka Radwańska, Magda Linette and Iga Świątek. At the China Open where Fręch was seeded for the first time at a WTA 1000, she defeated qualifier Alycia Parks in three sets and 12th seed Diana Shnaider to record her first two wins at the tournament and reached her first round of 16 at a WTA 1000 in her career.

In the second round of the Wuhan Open, Fręch beat sixth seed Emma Navarro in three sets, recording the first win over a top 10 player in her career, to reach back-to-back rounds of 16 at the 1000-level. Next, she reached her first WTA 1000 quarterfinal with an upset over ninth seed Beatriz Haddad Maia. As a result, she reached a new career-high in the top 25.