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Alexander Blockx
Alexander Blockx (born 8 April 2005) is a Belgian professional tennis player. He has a career-high ATP singles ranking of world No. 72 achieved on 13 April 2026 and a best doubles ranking of No. 467 achieved on 10 November 2025. He is currently the No. 3 singles player from Belgium.
Blockx won the boys' singles title at the 2023 Australian Open. He represents Belgium at the Davis Cup.
Blockx was born in Antwerp, Belgium, to a family of Ukrainian descent. He started taking tennis lessons in his early childhood with his coach Philippe Cassiers.
Blockx had notable results on ITF junior circuit, maintaining a 108–48 singles win-loss record.[citation needed] In 2022, he reached the third round and then quarterfinals of major jr. events of that season, at Wimbledon and the US Open.
The following year, Blockx reached the final at the 2023 Australian Open in both the boys' singles and doubles categories. Partnering with Brazilian João Fonseca, he was the runner-up in doubles, defeated by Learner Tien and Cooper Williams. Blockx gained revenge over Tien by winning the boys' singles final in three sets. Although Gilles-Arnaud Bailly reached two major jr. finals in 2022, the last Belgian boy to lift a title at this level, prior to Blockx, was Kimmer Coppejans at the 2012 French Open.
As a result, he reached an ITF junior combined ranking of world No. 1 on 1 May 2023.
Blockx made his ATP Tour qualifying debut at his national tournament, the 2022 European Open in his home town, Antwerp, where he was given a wildcard. He lost to Swiss Dominic Stricker in straight sets. He was also given a wildcard into the main draw of the doubles, playing alongside Ruben Bemelmans in what proved to be Bemelmans' last professional match.
In March 2023, Blockx made his Masters 1000 qualifications debut after receiving a wildcard for the 2023 Miami Open where he lost to Yosuke Watanuki.
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Alexander Blockx
Alexander Blockx (born 8 April 2005) is a Belgian professional tennis player. He has a career-high ATP singles ranking of world No. 72 achieved on 13 April 2026 and a best doubles ranking of No. 467 achieved on 10 November 2025. He is currently the No. 3 singles player from Belgium.
Blockx won the boys' singles title at the 2023 Australian Open. He represents Belgium at the Davis Cup.
Blockx was born in Antwerp, Belgium, to a family of Ukrainian descent. He started taking tennis lessons in his early childhood with his coach Philippe Cassiers.
Blockx had notable results on ITF junior circuit, maintaining a 108–48 singles win-loss record.[citation needed] In 2022, he reached the third round and then quarterfinals of major jr. events of that season, at Wimbledon and the US Open.
The following year, Blockx reached the final at the 2023 Australian Open in both the boys' singles and doubles categories. Partnering with Brazilian João Fonseca, he was the runner-up in doubles, defeated by Learner Tien and Cooper Williams. Blockx gained revenge over Tien by winning the boys' singles final in three sets. Although Gilles-Arnaud Bailly reached two major jr. finals in 2022, the last Belgian boy to lift a title at this level, prior to Blockx, was Kimmer Coppejans at the 2012 French Open.
As a result, he reached an ITF junior combined ranking of world No. 1 on 1 May 2023.
Blockx made his ATP Tour qualifying debut at his national tournament, the 2022 European Open in his home town, Antwerp, where he was given a wildcard. He lost to Swiss Dominic Stricker in straight sets. He was also given a wildcard into the main draw of the doubles, playing alongside Ruben Bemelmans in what proved to be Bemelmans' last professional match.
In March 2023, Blockx made his Masters 1000 qualifications debut after receiving a wildcard for the 2023 Miami Open where he lost to Yosuke Watanuki.