Alexander Blockx
Country (sports)  Belgium
Residence Antwerp, Belgium
Born (2005-04-08) 8 April 2005 (age 21)
Antwerp, Belgium
Height 1.93 m (6 ft 4 in)
Turned pro 2022
Plays Right-handed (two-handed backhand)
Coach Ruben Bemelmans (Apr 2026–), Philippe Cassiers (–Apr 2026)[1]
Prize money US $1,226,031
Singles
Career record 15–14 (at ATP Tour level, Grand Slam level, and in Davis Cup)
Career titles 0
Highest ranking No. 69 (20 April 2026)
Current ranking No. 69 (20 April 2026)
Grand Slam singles results
Australian Open 1R (2026)
French Open Q1 (2025)
Wimbledon Q3 (2025)
US Open Q2 (2025)
Doubles
Career record 1–3 (at ATP Tour level, Grand Slam level, and in Davis Cup)
Highest ranking No. 467 (10 November 2025)
Current ranking No. 880 (20 April 2026)
Team competitions
Davis Cup 0–1
Last updated on: 1 May 2026.

Alexander Blockx (born 8 April 2005) is a Belgian professional tennis player. He has a career-high ATP singles ranking of world No. 69 achieved on 20 April 2026, and a best doubles ranking of No. 467, reached on 10 November 2025.[2] He is the current No. 1 singles player from Belgium.[3]

Blockx won the boys' singles title at the 2023 Australian Open.[4] He represents Belgium at the Davis Cup.

Early life

Blockx was born in Antwerp, Belgium, to a family of Ukrainian descent. He was introduced to tennis in his childhood by accompanying and observing his older brother taking his tennis lessons. His current coach, Philippe Cassiers, asked if the younger Blockx would like to try playing tennis, and gave him a racquet. Blockx and Cassiers have teamed up since. [1][5][6]

Junior tennis

Blockx had notable results on the 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 junior events of that season, at Wimbledon and the US Open.[7]

The following year, Blockx reached the final at the 2023 Australian Open in both the boys' singles[8][9] and doubles categories. Partnering with Brazilian João Fonseca, he was the runner-up in doubles, defeated by Learner Tien and Cooper Williams.[10] Blockx gained revenge over Tien by winning the boys' singles final in three sets. Although Gilles-Arnaud Bailly reached two major junior 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.[11]

As a result, he reached an ITF junior combined ranking of world No. 1 on 1 May 2023.[12]

Professional career

2022: First ATP Tour matches

Blockx made his ATP Tour qualifying debut at his national tournament, the 2022 European Open in his hometown, Antwerp, where he was given a wildcard. He lost to Swiss Dominic Stricker in straight sets.[13] 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.[14]

2023: More ATP matches, top 500 debut

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.[15][16]

Blockx received a wildcard for the qualifying competition at the Antwerp Open and qualified into the main draw on his ATP singles debut.[17] In his very first ATP Tour singles main draw match ever in his hometown, he lost to fifth seed Yannick Hanfmann in two close sets.[18] Just a week after his first appearance on the ATP circuit, he won his first ITF title in Glasgow. One week later he won his second title in Sunderland.[19] Partly due to his first qualification for an ATP tournament and winning two ITF titles, he entered the top 500 for the first time on 6 November 2023.[20]

2024: Maiden Challenger title, top 250

Blockx received a wildcard for the qualifying competition at the 2024 Australian Open. He also received a qualifying wildcard for the 2024 Miami Open but lost to Pedro Martinez in the first round. He reached a new career-high ranking of No. 294 on 18 March 2024.[20] In November, Blockx won his maiden Challenger title in Kobe, Japan, defeating Jurij Rodionov in the final. He became the third-youngest Belgian champion in Challenger history (after Libor Pimek and Olivier Rochus). En route to the title, he defeated for the first time a top-100 player, Taro Daniel. As a result, he rose to No. 205 on 18 November 2024, which gave him direct entry to the Grand Slam qualifying rounds.[21]

2025: First ATP win, NextGen finalist, top 125

In January, Blockx won his second Challenger title in Oeiras, Portugal, defeating Liam Draxl in the final. He became the youngest Belgian to earn multiple trophies at that level. As a result, he entered the top 150 in the singles rankings on 27 January 2025.[22][23] Blockx made his Masters main draw debut at the 2025 Miami Open as a qualifier but lost to Corentin Moutet.[24]

In July, Blockx reached his third Challenger final at the Winnipeg Challenger, losing to Liam Draxl in the final.[25][26] Blockx entered his second Masters 1000 main draw as a qualifier at the National Bank Open in Toronto.[27] Ranked at a career high of world No. 119, achieved on 4 August 2025, Blockx also qualified for the main draw at the Cincinnati Open, where he recorded his first ATP Tour win, as well as his first Masters 1000 win, by defeating Marcos Giron.[28] The result solidified Blockx's fifth position in the NextGen Live Race to Jeddah.[29] Blockx won his second Challenger of the 2025 season at the 2025 Slovak Open, and moved to fourth in the NextGen race.[30][31] At the 2025 Moselle Open, Blockx received an entry through the Next Gen Accelerator programme and recorded his second tour-level win, defeating qualifier Francesco Passaro. As a result he moved up to world No. 101 in the singles rankings on 10 November 2025.[32][33]

Blockx reached the 2025 Next Gen ATP Finals championship match, but lost to previous year finalist Learner Tien.[34]

2026: Major debut, Masters semifinal, top 40

In January, Blockx won the title at the Canberra Challenger 125. He entered the top 100 as a result[35] Later in the month, Blockx made his major debut at the Australian Open as a lucky loser, following the withdrawal of Arthur Cazaux. He lost in the first round to Jaime Faria in four sets.[36]

In February, Blockx reached his second Challenger final of the season in Lille, losing to Luca Van Assche in the final.[37][38] In April, he won his first ATP Tour matches on clay with a run to the third-round at the 2026 Monte-Carlo Masters.[citation needed]

At the 2026 Mutua Madrid Open Blockx defeated third seed Felix Auger-Aliassime and Francisco Cerúndolo, as well as defending champion Casper Ruud in straight sets in the quarterfinals to reach the semifinals of a Masters 1000 for the first time in his career.[39] The Belgian also became only the second man born in 2005 or later, after Jakub Menšík, to reach the semifinals at a Masters event. He lost to second seed Alexander Zverev.[40] As a result, he entered the Top 40 and became the No. 1 Belgian player in men's singles.[41]

Personal life

Blockx's parents were both professional athletes: His father, Oleg, was a track athlete in hurdle races and his mother, Natalia, was a swimmer.[42][43]

Since 2022, Blockx partly trains at the Tennis Vlaanderen in Antwerp and Cassiers' Forest Hills Tennis Academy.[44]

Performance timeline

Key
W  F  SF QF #R RR Q# DNQ A NH
(W) winner; (F) finalist; (SF) semifinalist; (QF) quarterfinalist; (#R) rounds 4, 3, 2, 1; (RR) round-robin stage; (Q#) qualification round; (DNQ) did not qualify; (A) absent; (NH) not held; (SR) strike rate (events won / competed); (W–L) win–loss record.
To avoid confusion and double counting, these charts are updated at the conclusion of a tournament or when the player's participation has ended.

Singles

Current through the 2026 Madrid Open.

Tournament 2023 2024 2025 2026 SR W–L Win %
Grand Slam tournaments
Australian Open A Q1 Q1 1R 0 / 1 0–1 0%
French Open A A Q1 0 / 0 0–0  – 
Wimbledon A A Q3 0 / 0 0–0  – 
US Open A A Q2 0 / 0 0–0  – 
Win–loss 0–0 0–0 0–0 0–1 0 / 1 0–1 0%
Masters tournaments
Indian Wells A A A Q1 0 / 0 0–0  – 
Miami Open Q1 Q1 1R Q2 0 / 1 0–1 0%
Monte-Carlo Masters A A A 3R 0 / 1 2–1 67%
Madrid Open A A A SF 0 / 1 5–1 83%
Italian Open A A A 0 / 0 0–0  – 
Canadian Open A A 1R 0 / 1 0–1 0%
Cincinnati Masters A A 2R 0 / 1 1–1 50%
Shanghai Masters A A A 0 / 0 0–0  – 
Paris Masters A A A 0 / 0 0–0  – 
Win–loss 0–0 0–0 1–3 7–2 0 / 5 8–5 62%

ATP Next Generation finals

Singles: 1 (runner-up)

Result    Date    Tournament Surface Opponent Score
Loss Dec 2025 Next Generation ATP Finals, Saudi Arabia Hard (i) United States Learner Tien 3–4(4–7), 2–4, 1–4

ATP Challenger Tour finals

Singles: 6 (4 titles, 2 runner-ups)

Legend
ATP Challenger Tour (4–2)
Finals by surface
Hard (4–2)
Clay (–)
Result W–L    Date    Tournament Tier Surface Opponent Score
Win 1–0 Nov 2024 Hyōgo Noah Challenger, Japan Challenger Hard (i) Austria Jurij Rodionov 6–3, 6–1
Win 2–0 Jan 2025 Oeiras Indoors III, Portugal Challenger Hard (i) Canada Liam Draxl 7–5, 6–1
Loss 2–1 Jul 2025 Winnipeg National Bank Challenger, Canada Challenger Hard Canada Liam Draxl 6–1, 3–6, 4–6
Win 3–1 Oct 2025 Slovak Open, Slovakia Challenger Hard (i) France Titouan Droguet 6–4, 6–3
Win 4–1 Jan 2026 Workday Canberra International, Australia Challenger Hard Spain Rafael Jódar 6–4, 6–4
Loss 4–2 Feb 2026 Play In Challenger, France Challenger Hard (i) France Luca Van Assche 2–6, 4–6

Doubles: 1 (runner-up)

Legend
ATP Challenger Tour (0–1)
Result W–L    Date    Tournament Tier Surface Partner Opponents Score
Loss 0–1 Feb 2025 Open Pau–Pyrénées, France Challenger Hard (i) Belgium Raphaël Collignon Germany Jakob Schnaitter
Germany Mark Wallner		 4–6, 7–6(7–5), [8–10]

ITF World Tennis Tour finals

Singles: 4 (2 titles, 2 runner-ups)

Legend
ITF WTT (2–2)
Finals by surface
Hard (2–2)
Clay (–)
Result W–L    Date    Tournament Tier Surface Opponent Score
Loss 0–1 Mar 2023 M15 Sharm El Sheikh, Egypt WTT Hard Georgia (country) Saba Purtseladze 3–6, 4–6
Loss 0–2 Sep 2023 M25 Falun, Sweden WTT Hard (i) Belgium Tibo Colson 5–7, 6–4, 3–6
Win 1–2 Oct 2023 M25 Glasgow, UK WTT Hard (i) United Kingdom Anton Matusevich 5–7, 6–4, 6–2
Win 2–2 Nov 2023 M25 Sunderland, UK WTT Hard (i) Belgium Tibo Colson 4–6, 6–2, 6–4

Doubles: 1 (runner-up)

Legend
ITF WTT (0–1)
Result W–L    Date    Tournament Tier Surface Partner Opponents Score
Loss 0–1 Jun 2023 M25 Arlon, Belgium WTT Clay Belgium Alessio Basile Brazil Gabriel Roveri Sidney
Ukraine Vladyslav Orlov		 6–0, 5–7, [5–10]

Junior Grand Slam finals

Singles: 1 (title)

Result Year Tournament Surface Opponent Score
Win 2023 Australian Open Hard United States Learner Tien 6–1, 2–6, 7–6(11–9)

Doubles: 1 (runner-up)

Result Year Tournament Surface Partner Opponents Score
Loss 2023 Australian Open Hard Brazil João Fonseca United States Learner Tien
United States Cooper Williams		 4–6, 4–6

Wins over top-10 players

  • Blockx has a 1–2 (33.33%) match record against players who were, at the time the match was played, ranked in the top 10.[45]
Season 2026 Total
Wins 1 1
# Player Rk Event Surface Rd Score Rk Ref
2026
1. Canada Félix Auger-Aliassime 5 Madrid Open, Spain Clay 3R 7–6(7–3), 6–3 69
  • Key: (Rk) first use, opponent rank; (Rd) round; (Rk) 2nd use, player rank; (Ref) reference; (F) final; (SF) semifinal; (QF) quarterfinal; (#R) rounds 4, 3, 2, 1; (RR) round-robin stage
*As of 28 April 2026

References

  1. ^ a b "Blockx-buster: Belgian teenager targeting Next Gen ATP Finals". 26 February 2025.
  2. ^ "Alexander Blockx". atp.com.
  3. ^ "Belgium Rankings (Singles)". ATP Tour. Retrieved 30 January 2025.
  4. ^ "Alexander Blockx, Alina Korneeva win Australian Open junior titles". ESPN. 28 January 2023.
  5. ^ "Building Blockx: #NextGenATP Belgian's childhood spark fueled 'unbelievable passion'". ATPTour. 19 September 2024.
  6. ^ "Onthou de naam: Alexander Blockx, 17-jarige Belg, staat in finale dubbel en halve finale enkelspel op Australian Open". HLN (in Dutch). 26 January 2023.
  7. ^ "Blockx Juniors Activity".
  8. ^ "AUSTRALIAN OPEN. Alexander Blockx naar finale juniorentoernooi". Nieuwsblad.be (in Dutch).
  9. ^ "Australian Open: Belgian Alexander Blockx qualifies for the final of the junior table". rtbf.be (in French).
  10. ^ "17-jarige Alexander Blockx staat in halve finales van juniorentoernooi op Australian Open". Sporza.bel (in Dutch). 26 January 2023.
  11. ^ "Juniors wrap: Korneeva wins marathon, Blockx stacks up". ausopen.com.
  12. ^ "Alexander Blockx Junior Results". ITF.
  13. ^ "Alexander Blockx: the next big promise in Belgian men's tennis". Proximus.be (in Dutch).
  14. ^ "Topweek voor Alexander Blockx op European Open: "Trainen met Auger-Aliassime, dat kan maar één keer per jaar"". hln.be (in Dutch).
  15. ^ "Full List of Wild Card Entries Announced For 2023 Miami Open Presented by Itaú". 14 March 2023.
  16. ^ "Miami Open Announces Final Wild Cards".
  17. ^ "BLOCKX, BAILLY AND ONCLIN ONE STEP CLOSER TO MAIN DRAW AFTER WINS". Europeanopen.be. 15 October 2023. Retrieved 29 December 2024.
  18. ^ "THIEM WINS THRILLER, BLOCKX LOSES NARROWLY". 17 October 2023. Retrieved 29 December 2024.
  19. ^ "Blockx singles titles". Retrieved 3 November 2025.
  20. ^ a b "AB Rankings".
  21. ^ "#NextGenATP Blockx & Quinn claim first Challenger titles; Boyer etches his name in American history". ATPTour. 19 November 2024.
  22. ^ @TennisBelgium (26 January 2025). "Second challenger title for Alexander Blockx in Oeiras! He beats Liam Draxl 7-5, 6-1 in the final without facing a break point. Into the top 150 on Monday! 💪👏⬆️" (Tweet) – via X (formerly Twitter).
  23. ^ "#NextGenATP Blockx banks Belgian history with Challenger title". 27 January 2025.
  24. ^ "Cina, 17, captures first tour-level win in Miami; Blockx, Sakamoto fall in ATP Masters 1000 debuts". 20 March 2025.
  25. ^ "Draxl Claims Winnipeg National Bank Challenger Title". tennistourtalk.com. Retrieved 14 July 2025.
  26. ^ "Former college standouts Pinnington Jones, Draxl win Challenger titles". atptour.com. Retrieved 14 July 2025.
  27. ^ "Masters 1000 Toronto : 3e défaite de rang pour David Goffin, Alexander Blockx également sorti au 1er tour" (in French). 28 July 2025.
  28. ^ "À 20 ans, Alexander Blockx signe sa première victoire sur le circuit ATP et file au 2e tour du Masters 1000 de Cincinnati" (in French). 8 August 2025.
  29. ^ "#NextGenATP Blockx captures maiden ATP Tour win in Cincinnati". ATPTour. 8 August 2025.
  30. ^ "Young and the restless: Former junior champs Alexander Blockx and Rafael Jódar take ATP Challenger titles". 4 November 2025.
  31. ^ "Blockx, Jodar win Challenger titles & climb in Live Race To Jeddah". 3 November 2025.
  32. ^ "Sonego overcomes fourth seed Cobolli, #NextGenATP Blockx advances in Metz". ATPTour. 4 November 2025.
  33. ^ "Sachko upsets Bublik, Tien reaches QFs in Metz". ATPTour. 5 November 2025.
  34. ^ "Learner Tien tops the class at Next Gen ATP Finals". Next Gen ATP Finals. 21 December 2025.
  35. ^ "Alexander Blockx wins Next Gen clash over Rafael Jodar to lift Canberra Challenger crown". Tennis.com. 12 January 2026.
  36. ^ "A Austrália continua a ser o Happy Slam dos portugueses: Jaime Faria apurado para segunda ronda em Melbourne". observador.pt. 18 January 2026. Retrieved 21 January 2026.
  37. ^ "Luca Van Assche remporte le Challenger de Lille et va retrouver le Top 100". L'Équipe (in French). 22 February 2026. Retrieved 22 February 2026.
  38. ^ "Van Assche returns to Top 100 following Lille Challenger title". ATPTour. 23 February 2026.
  39. ^ "Blockx continues dream run into Madrid SFs". ATP Tour. 30 April 2026. Retrieved 30 April 2026.
  40. ^ "Zverev ends Blockx' run and set for another crack at Sinner into Madrid final". ATP Tour. 1 May 2026. Retrieved 1 May 2026.
  41. ^ "Madrid Open - Blockx battu par Zverev mais pas abattu: "Énormément de motivation pour la suite"". star-sporttv (in Belgian French). 1 May 2026. Retrieved 1 May 2026.
  42. ^ "ATP - Alexander Blockx". ATP Tour. ATP. Retrieved 9 April 2026.
  43. ^ "Belgian won two ATP Challenger Tour trophies in 2025". Next Gen ATP Finals. ATP. Retrieved 9 April 2026.
  44. ^ "Open d'Australie : Philippe Cassiers, coach d'Alexander Blockx : "Une super expérience pour lui"". rtbf.be (in French). 26 January 2023.
  45. ^ "Alexander Blockx vs Top 10". Tennis Abstract. Retrieved 24 April 2026.