Renata Zarazua

Zarazúa made her WTA Tour singles debut at the 2016 Brasil Cup, after she reached the main draw through qualifying, but to lost in the first round Catalina Pella in three sets.

Having been given a wildcard entry at the 2018 Mexican Open, Zarazúa defeated Kristýna Plíšková to reach the round of 16, where she lost to third seed Daria Gavrilova.

In February, Zarazúa received a wildcard to play at the Mexican Open in Acapulco, where she reached her first WTA Tour singles semifinal with wins over top seed Sloane Stephens, Katie Volynets and Tamara Zidanšek, before losing to Leylah Fernandez. Her run at the tournament saw her become the first Mexican woman to play a WTA Tour semifinal since 1993.

In September, Zarazúa qualified for the main draw at the delayed French Open, making her first appearance at a Grand Slam tournament and becoming the first Mexican woman in a major main draw in 20 years. She defeated wildcard Elsa Jacquemot recording her first major match win, and becoming the first Mexican woman to do so since Angélica Gavaldón reached the second round of the 2000 Australian Open. Zarazúa lost in round two to third seed Elina Svitolina in three sets under the newly-installed roof on Court Philippe Chatrier.

In 2021, Zarazúa qualified for the delayed Tokyo Olympics in singles and in doubles, partnering Giuliana Olmos both making their Olympics debut.^[]

Zarazúa entered her maiden WTA 125 final at the 2021 Concord Open losing to Magdalena Fręch.

Zarazúa won her first WTA 125 title at the 2023 Montevideo Open defeating the top seed, Diane Parry, in the final, becoming the first Mexican woman to win a WTA Challenger Tour singles tournament.

Zarazúa reached the top 100 on 8 January, and became the second Mexican player, after Angélica Gavaldón in 1996, to reach the milestone. The following week, she qualified for the Australian Open making her debut and becoming the second Mexican woman to reach the main draw at the tournament in the Open Era, and the first since two-time quarterfinalist Angelica Gavaldon's final appearance in 2000. Zarazúa lost in the first round to Martina Trevisan, in three sets. In February, playing with Iryna Shymanovich, she won her first WTA 125 doubles title on home soil at the Puerto Vallarta Open, defeating Angelica Moratelli and Camilla Rosatello in the final.

Zarazúa qualified for the Italian Open, making her debut at a clay WTA 1000 event, but lost to Elisabetta Cocciaretto in the first round. Wins over seventh seed Viktorija Golubic, wildcard entrant Ajla Tomljanović and Peyton Stearns saw Zarazúa reach the semifinals at the WTA 125 Parma Open in May, where she went out to eighth seed Mayar Sherif. She could not continue her good form into that month's French Open, losing in the first round to 14th seed Madison Keys in straight sets. Partnering Angelica Moratelli, she ended runner-up in the doubles at the WTA 125 Bari Open, losing the final against top seeds Anna Danilina and Irina Khromacheva. The following week, Zarazúa and Moratelli reached the final at the WTA 125 Valencia Open, but again suffered defeat, this time to second seeds Katarzyna Piter and Fanny Stollár in a match which went to a deciding champions tiebreak.

At Wimbledon, Zarazúa was eliminated in the final qualifying round but made the main draw for the first time in her career at this major as a lucky loser. She was defeated by Emma Raducanu in straight sets in a first round match.

Zarazúa also made her debut at the US Open as a direct entry benefitting from the withdrawal of Sorana Cîrstea, and recorded her first win at this Grand Slam tournament with an upset over 28th seed Caroline Garcia, before losing her next match to Caroline Wozniacki

At the WTA 500 Guadalajara Open, Zarazúa defeated Anhelina Kalinina to reach the second round, where she lost to Martina Trevisan. Zarazúa moved to a new career-high of world No. 78 in the singles rankings on 16 September 2024. She then won two ITF events, the Central Coast Pro Tennis Open, defeating Usue Maitane Arconada in the final in straight sets, and the Tyler Pro Challenge with a win over Iva Jovic in the final. As the top seed at her home tournament, the Mérida Open, she made the quarterfinals defeating wildcard Akasha Urhobo and qualifier Maja Chwalińska, before losing to eventual champion, Zeynep Sönmez. As a result, she reached a new career-high in the top 60 of the singles rankings.

As the top seed at the Fifth Third Charleston in November, Zarazúa won her second WTA 125 singles title defeating Alina Charaeva, Irene Burillo Escorihuela, Louisa Chirico, and Lauren Davis to reach the final, where she overcame Hanna Chang in straight sets. As a result, she reached a new career-high of world No. 51 in the singles rankings on 25 November 2024.

Zarazúa became the first Mexican player in 25 years to win a match at the Australian Open when she defeated Taylor Townsend. She lost to fourth seed Jasmine Paolini in the second round.

At the 2025 US Open Zarazúa defeated world No. 6, Madison Keys, her first top-10 win, making history for her country as the first Mexican woman to ever beat a top-10 opponent at the US Open, and the first to defeat a top 10 seed at any major since 1995 (when Angélica Gavaldón defeated No. 3 Jana Novotná in Australia). At the 2025 SP Open, Zarazúa upset top seed and local favorite Beatriz Haddad Maia to reach her first tour-level semifinal of the season and first since Acapulco in 2020.