Joel Josef Schwärzler (born 27 January 2006) is an Austrian tennis player. He has a career-high singles ranking of world No. 311 achieved on 10 February 2025 and a doubles ranking of No. 378 achieved on 21 October 2024.[2]
Schwärzler is the son of a South African mother and an Austrian father from Vorarlberg. He grew up in Hard, Austria. He began playing tennis at the age of 5.
He began training at the ÖTV performance centre in Südstadt in 2021.[3]
He won the Austrian U18 national championship titles in singles and doubles in 2022, and followed this up by winning the U16 European Championships in July 2022 in Přerov, Czech Republic, defeating top seed Martin Landaluce in the final.[4][5]
In October 2023, he won two titles in two weeks, claiming victory at J500 event in Osaka and following that up with victory at the ITF Junior Masters event in Chengdu, China defeating Rodrigo Pacheco Méndez of Mexico in the boys’ final.[7][8] He became the first Austrian player to win the title.[9] As a result he reached world No. 3 in the junior rankings.[10]
In May , Schwärzler won his first ATP Challenger Tour title at the 2024 Macedonian Open in Skopje, defeating Sergey Fomin, Ergi Kırkın, Andrew Paulson, Gerard Campana Lee and Kamil Majchrzak in the process. He achieved a new career high ranking of No. 387 with the win, and became the first player born in 2006 to win a Challenger title. João Fonseca, Schwärzler, Rei Sakamoto, Gabriel Debru and Learner Tien became the youngest champions of 2024 at that level. He was also just the fourth player to win an ATP Challenger Tour title while holding the Junior No. 1 ranking after Nick Kyrgios, Taylor Fritz and Wu Yibing.[12][13][14]