Tallon Griekspoor

Griekspoor at the 2019 French Open

Griekspoor made his ATP main draw debut as a wildcard at the 2017 Rotterdam Open in the singles draw against Gilles Müller.[3] In 2018, at the same tournament a year later, he defeated Grand Slam champion and 5th seed Stan Wawrinka of Switzerland in three sets to reach the second round as a wildcard. And in 2019, Griekspoor defeated the World No.11 and 2nd seed Karen Khachanov in the first round again as a wildcard.

Griekspoor qualified for the first time in the main singles draw of a Grand Slam tournament at the 2020 Australian Open. He made his top 150 debut on 31 August 2020.

In 2021, Griekspoor won two Challengers tour titles at the 2021 Prague Open and at the 2021 Slovak Open in Bratislava. As a result, he reached a career high ranking of No. 120 on 14 June 2021.

In June 2021, he also qualified for the 2021 Wimbledon Championships for the first time in his career. In July following Wimbledon, as the top seed, he reached also the final of the Challenger 2021 Dutch Open in Amersfoort. He defeated his compatriot and No. 2 seed Botic van de Zandschulp in the final, winning his fifth Challenger.[4] He reached a career-high of No. 105 on 19 July 2021.

At the 2021 US Open he reached the second round of a Major for the first time in his career defeating Jan-Lennard Struff in five sets.[5][6] He lost to World No. 1 Novak Djokovic in the second round. In September following the US Open, he won his sixth Challenger title and fourth of the year at the 2021 Murcia Open in Spain defeating top seed Roberto Carballes Baena. The following month he won his fifth Challenger of the year at the 2021 Tennis Napoli Cup in Naples, Italy defeating Andrea Pellegrino. The following week also in Naples, he won his sixth Challenger title at the 2021 Vesuvio Cup defeating Alexander Ritschard.[7] With this victory Griekspoor tied Benjamin Bonzi for the most Challenger titles in 2021. In addition, he joined Facundo Bagnis (2016), Juan Ignacio Chela (2001) and Younes El Aynaoui (1998) as the only players to lift six singles trophies in one season in ATP Challenger history. As a result, he moved 29 positions up in the rankings into the top 100, for the first time in his career, at World No. 89 on 18 October 2021. He won his seventh Challenger title of the season in Tenerife defeating Feliciano Lopez in the final [8] and becoming the sole record holder for most trophies at that level in a single year.[9][10] As a result, moved another 16 positions up to a new career high of No. 72 on 8 November 2021. He won his eighth Challenger at the 2021 Slovak Open II and moved to a new career high ranking of No. 65 on 15 November 2021.

Griekspoor started his year at the Melbourne Summer Set 1, where he made the quarterfinals after beating 7th seed Dominik Koepfer and Australian Alexei Popyrin. He withdrew from his quarterfinal match against Rafael Nadal due to a foot injury.[11]

At the Australian Open he defeated Fabio Fognini in straight sets in the first round for his first win at this Major and only the second in his career. He lost to 19th seed Pablo Carreño Busta in the second round.

At his home 2022 ABN AMRO World Tennis Tournament in Rotterdam, he reached the second round as a wildcard, with a victory over seventh seed Aslan Karatsev saving two match points, for his third top-20 win.[12] He is 3-0 against top-15 players in his home tournament in Rotterdam.[13]