Alexander Blockx

Alexander Blockx
Country (sports) Belgium
ResidenceAntwerp, Belgium
Born (2005-04-08) 8 April 2005 (age 21)
Antwerp, Belgium
Height1.93 m (6 ft 4 in)
Turned pro2022
PlaysRight-handed (two-handed backhand)
CoachRuben Bemelmans (May 2026–),[citation needed]
Philippe Cassiers (2010–Apr 2026)[1]
Prize moneyUS $1,595,950
Singles
Career record17–15 (at ATP Tour level, Grand Slam level, and in Davis Cup)
Career titles0
Highest rankingNo. 36 (4 May 2026)
Current rankingNo. 36 (4 May 2026)
Grand Slam singles results
Australian Open1R (2026)
French Open2R (2026)
WimbledonQ3 (2025)
US OpenQ2 (2025)
Doubles
Career record1–3 (at ATP Tour level, Grand Slam level, and in Davis Cup)
Highest rankingNo. 467 (10 November 2025)
Current rankingNo. 881 (4 May 2026)
Team competitions
Davis Cup0–1
Last updated on: 4 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. 36 achieved on 4 May 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.[5]

Early life

Blockx was born in Antwerp, Belgium, to a family of Ukrainian descent. Blockx's parents were both professional athletes: His father, Oleg, was a track athlete in hurdle races and his mother, Natalia, was a swimmer.[6][7] He was introduced to tennis in his childhood by accompanying and observing his older brother Maxime taking his tennis lessons.

His coach, Philippe Cassiers, asked if the younger Blockx would also like to try playing tennis, and gave him a racquet. They started their partnership when Blockx was 4.[1][8][9][10]

Career

Juniors

Blockx reached the third round and then quarterfinals of major junior events of that season, at 2022 Wimbledon and at the 2022 US Open.[11] The following year, Blockx reached the final at the 2023 Australian Open in both the boys' singles[12][13] and doubles categories. Partnering with Brazilian João Fonseca, he was the runner-up in doubles, defeated by Learner Tien and Cooper Williams.[14] 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.[15] Blockx had good results in Juniors, maintaining a 108–48 singles win-loss record, and reached an ITF junior combined ranking of world No. 1 on 1 May 2023.[16]

2022: Beginnings, ATP doubles debut

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.[17]

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.[18]

2023: ATP singles and top 500 debuts

In March, Blockx made his Masters 1000 qualifications debut after receiving a wildcard for the 2023 Miami Open, where he lost to Yosuke Watanuki.[19][20]

Blockx received a wildcard for the qualifying competition at the Antwerp Open and qualified into the main draw on his ATP singles debut.[21] 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.[22] 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.[23] 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.[24]

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.[24] 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.[25]

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.[26][27] Blockx made his Masters main draw debut at the 2025 Miami Open as a qualifier but lost to Corentin Moutet.[28]

In July, Blockx reached his third Challenger final at the Winnipeg Challenger, losing to Liam Draxl in the final.[29][30] Blockx entered his second Masters 1000 main draw as a qualifier at the National Bank Open in Toronto.[31] 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.[32] The result solidified Blockx's fifth position in the NextGen Live Race to Jeddah.[33] Blockx won his second Challenger of the 2025 season at the 2025 Slovak Open, and moved to fourth in the NextGen race.[34][35] 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.[36][37]

Blockx reached the 2025 Next Gen ATP Finals championship match, but lost to previous year finalist Learner Tien.[38]

2026: Major debut, Masters semifinal, top 50

In January, Blockx won his fourth Challenger singles trophy at the Canberra International, defeating qualifier Rafael Jódar in the final. As a result of that title, he entered the top 100 on 12 January 2026.[39] 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.[40]

In February, Blockx reached his second Challenger final of the season in Lille, losing to seventh seed and home favourite Luca Van Assche in the final.[41][42]

In April, Blockx won his first ATP Tour matches on clay with a run to the third round as a qualifier, at the 2026 Monte-Carlo Masters. His defeat over Flavio Cobolli in the second round was his first top-20 win.[43] At the next Masters, the 2026 Mutua Madrid Open, he defeated third seed Félix Auger-Aliassime in the third round, recording his first Top-10 win.[44][45] Next the Belgian defeated 16th seed Francisco Cerúndolo, as well as defending champion Casper Ruud in straight sets to reach his first Masters 1000 semifinal. Blockx became only the second man born in 2005 or later, after Jakub Menšík, to reach the semifinals at a Masters event.[44][46] He lost to second seed Alexander Zverev.[47] As a result, he entered the Top 40 at world No. 36 and became the No. 1 Belgian player in the ATP singles rankings on 4 May 2026.[48][49]

Blockx reached the second round on his debut in the main draw at the 2026 French Open with a straight sets win against Coleman Wong, but was forced to withdraw with an ankle injury prior to his second round match against 8th seed Alex de Minaur.[50][51]

Coaching

Since 2022, Blockx partly trains at the Tennis Vlaanderen in Antwerp and Cassiers' Forest Hills Tennis Academy. He was coached by Philippe Cassiers from 2010 until 2026.[1][6][52]

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 French 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 2R[a] 0 / 1 1–0 100%
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 1–1 0 / 2 1–1 50%
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 3R 0 / 1 2–1 67%
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 9–3 0 / 6 10–6 63%

Next Gen ATP finals

Singles: 1 (runner-up)

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

ATP Challenger Tour finals

  Challenger

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

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

Doubles: 1 (runner-up)

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

ITF World Tennis Tour finals

  World Tennis

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

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

Doubles: 1 (runner-up)

Result W–L    Date    Tournament Surface Partner Opponents Score
Loss 0–1 Jun 2023 M25 Arlon, Belgium 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.[53]
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

Notes

  1. ^ Withdraw during the tournament. Not counted as a loss.

References

  1. ^ a b c "Alexander Blockx, Madrid Open semifinalist, is ready for a for a bigger tennis court in every sense". The New York Times. 1 May 2026.
  2. ^ "Alexander Blockx". ATP.
  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. ^ "Davis Cup – Alexander Blockx Overview".
  6. ^ a b "Alexander Blockx Bio". ATP Tour. ATP. Retrieved 9 April 2026.
  7. ^ "Belgian won two ATP Challenger Tour trophies in 2025". Next Gen ATP Finals. 27 November 2025.
  8. ^ "Blockx-buster: Belgian teenager targeting Next Gen ATP Finals". Next Gen ATP Finals. 26 February 2025.
  9. ^ "Building Blockx: #NextGenATP Belgian's childhood spark fueled 'unbelievable passion'". ATP Tour. 19 September 2024.
  10. ^ "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.
  11. ^ "Blockx Juniors Activity".
  12. ^ "AUSTRALIAN OPEN. Alexander Blockx naar finale juniorentoernooi". Nieuwsblad.be (in Dutch).
  13. ^ "Australian Open: Belgian Alexander Blockx qualifies for the final of the junior table". rtbf.be (in French).
  14. ^ "17-jarige Alexander Blockx staat in halve finales van juniorentoernooi op Australian Open". Sporza.bel (in Dutch). 26 January 2023.
  15. ^ "Juniors wrap: Korneeva wins marathon, Blockx stacks up". ausopen.com.
  16. ^ "Alexander Blockx Junior Results". ITF.
  17. ^ "Alexander Blockx: the next big promise in Belgian men's tennis". Proximus.be (in Dutch).
  18. ^ "Topweek voor Alexander Blockx op European Open: "Trainen met Auger-Aliassime, dat kan maar één keer per jaar"". hln.be (in Dutch).
  19. ^ "Full List of Wild Card Entries Announced For 2023 Miami Open Presented by Itaú". 14 March 2023.
  20. ^ "Miami Open Announces Final Wild Cards".
  21. ^ "BLOCKX, BAILLY AND ONCLIN ONE STEP CLOSER TO MAIN DRAW AFTER WINS". Europeanopen.be. 15 October 2023. Retrieved 29 December 2024.
  22. ^ "THIEM WINS THRILLER, BLOCKX LOSES NARROWLY". 17 October 2023. Retrieved 29 December 2024.
  23. ^ "Blockx singles titles". Retrieved 3 November 2025.
  24. ^ a b "AB Rankings".
  25. ^ "#NextGenATP Blockx & Quinn claim first Challenger titles; Boyer etches his name in American history". ATPTour. 19 November 2024.
  26. ^ @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).
  27. ^ "#NextGenATP Blockx banks Belgian history with Challenger title". 27 January 2025.
  28. ^ "Cina, 17, captures first tour-level win in Miami; Blockx, Sakamoto fall in ATP Masters 1000 debuts". 20 March 2025.
  29. ^ "Draxl Claims Winnipeg National Bank Challenger Title". tennistourtalk.com. Retrieved 14 July 2025.
  30. ^ "Former college standouts Pinnington Jones, Draxl win Challenger titles". atptour.com. Retrieved 14 July 2025.
  31. ^ "Masters 1000 Toronto : 3e défaite de rang pour David Goffin, Alexander Blockx également sorti au 1er tour" (in French). 28 July 2025.
  32. ^ "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.
  33. ^ "#NextGenATP Blockx captures maiden ATP Tour win in Cincinnati". ATPTour. 8 August 2025.
  34. ^ "Young and the restless: Former junior champs Alexander Blockx and Rafael Jódar take ATP Challenger titles". 4 November 2025.
  35. ^ "Blockx, Jodar win Challenger titles & climb in Live Race To Jeddah". 3 November 2025.
  36. ^ "Sonego overcomes fourth seed Cobolli, #NextGenATP Blockx advances in Metz". ATPTour. 4 November 2025.
  37. ^ "Sachko upsets Bublik, Tien reaches QFs in Metz". ATPTour. 5 November 2025.
  38. ^ "Learner Tien tops the class at Next Gen ATP Finals". Next Gen ATP Finals. 21 December 2025.
  39. ^ "Alexander Blockx wins Next Gen clash over Rafael Jodar to lift Canberra Challenger crown". Tennis.com. 12 January 2026.
  40. ^ "A Austrália continua a ser o Happy Slam dos portugueses: Jaime Faria apurado para segunda ronda em Melbourne". observador.pt. 18 January 2026.
  41. ^ "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.
  42. ^ "Van Assche returns to Top 100 following Lille Challenger title". ATP Tour. 23 February 2026.
  43. ^ "'Mental Gaps Surfaced': No. 16 Cobolli Analyzes Shock Monte-Carlo Loss to Qualifier Blockx". en.tennistemple.com. 9 April 2026. Retrieved 9 April 2026.
  44. ^ a b "Next Gen hotshot Alexander Blockx dethrones Casper Ruud for first Masters semifinal". tennis.com. 30 April 2026.
  45. ^ "Blockx claims first top 10 win over Auger-Aliassime, Round of 16 preview". tennisratio.com. 27 April 2026. Retrieved 4 May 2026.
  46. ^ "Blockx continues dream run into Madrid SFs". ATP Tour. 30 April 2026.
  47. ^ "Zverev ends Blockx' run and set for another crack at Sinner into Madrid final". ATP Tour. 1 May 2026. Retrieved 1 May 2026.
  48. ^ "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.
  49. ^ "Blockx bursts into Top 40, Mover of Week". ATPTour. 4 May 2026.
  50. ^ "Blockx withdraws from Roland Garros, De Minaur advances to R3". ATP Tour. 26 May 2026. Retrieved 27 April 2026.
  51. ^ "Coleman Wong knocked out of French Open". rthk.hk. 25 May 2026. Retrieved 27 May 2026.
  52. ^ "Open d'Australie : Philippe Cassiers, coach d'Alexander Blockx : "Une super expérience pour lui"". rtbf.be (in French). 26 January 2023.
  53. ^ "Alexander Blockx vs Top 10". Tennis Abstract. Retrieved 24 April 2026.

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