Calvin John Klaasen

RSA Born 1987 Male FT,SI,FIDE Master
FIDE ID
14300133

Player overview

Calvin John Klaasen’s highest recorded classical FIDE rating is 2320 (January 2018). On the November 2026 FIDE list, Calvin John Klaasen ranks #9838 worldwide and #18 in South Africa among active classical players.

FIDE ratings

Classical

2172

Published FIDE

Rapid

2167

Published FIDE

Blitz

2270

Published FIDE

Official classical ranks

World rank
#9838
National rank · RSA
#18

Active players · Nov 2026 FIDE list ⓘ

Rating milestones

Highest recorded rating
2320 Jan 2018
Recorded years
2007–2026
Archived games
220

Based on available monthly lists and saved games.

Rating history

FIDE rating history

Published rating lists through Nov 2026.

Download chart or data

View rating lists

Games

Published games available in our archive; coverage varies by tournament. Archive last checked: 2026-11-11 (UTC).

Online games are identified from known tournament names, playing sites and PGN mode. Other games are listed as OTB (over-the-board).

# Date Event Site Round White Black Result Moves View
101 2018-09-25 43rd Olympiad 2018 Batumi GEO 2.17 Jure Skoberne Calvin John Klaasen Lost: 1-0 25 Open
102 2018-09-24 43rd Olympiad 2018 Batumi GEO 1.85 Calvin John Klaasen Samuel Gabius Britus Won: 1-0 55 Open
103 2018-07-03 ch-Commonwealth 2018 New Delhi IND 9.18 Chudasama Ankit Calvin John Klaasen Won: 0-1 48 Open
104 2018-07-02 ch-Commonwealth 2018 New Delhi IND 8.21 Calvin John Klaasen Paul Gluckman Won: 1-0 40 Open
105 2018-07-01 ch-Commonwealth 2018 New Delhi IND 7.23 Calvin John Klaasen Mukherjee Arpita Draw: 1/2-1/2 117 Open
106 2018-06-29 ch-Commonwealth 2018 New Delhi IND 4.2 Sreeshwan Maralakshikari Calvin John Klaasen Lost: 1-0 38 Open
107 2018-05-01 Capablanca Festival GM Pretoria RSA 9.2 Calvin John Klaasen Milanto Harifidy Ralison Draw: 1/2-1/2 43 Open
108 2018-04-30 Capablanca Festival GM Pretoria RSA 8.4 Aleksa Strikovic Calvin John Klaasen Draw: 1/2-1/2 16 Open
109 2018-04-30 Capablanca Festival GM Pretoria RSA 7.3 Calvin John Klaasen Alejandro Hoffman Draw: 1/2-1/2 11 Open
110 2018-04-29 Capablanca Festival GM Pretoria RSA 6.3 Jack Van Zyl-Rudd Calvin John Klaasen Draw: 1/2-1/2 31 Open
111 2018-04-28 Capablanca Festival GM Pretoria RSA 5.4 Calvin John Klaasen Bernardo Roselli Mailhe Draw: 1/2-1/2 60 Open
112 2018-04-28 Capablanca Festival GM Pretoria RSA 4.2 Daniel Cawdery Calvin John Klaasen Draw: 1/2-1/2 20 Open
113 2018-04-27 Capablanca Festival GM Pretoria RSA 3.5 Calvin John Klaasen Sahaj Grover Lost: 0-1 30 Open
114 2018-04-27 Capablanca Festival GM Pretoria RSA 2.1 Andrew Kayonde Calvin John Klaasen Draw: 1/2-1/2 48 Open
115 2018-04-26 Capablanca Festival GM Pretoria RSA 1.5 Watu Kobese Calvin John Klaasen Lost: 1-0 34 Open
116 2018-03-18 Boardwalk Pearson IM 2018 Port Elizabeth RSA 9.5 Calvin John Klaasen Geoffrey Luanja Lost: 0-1 37 Open
117 2018-03-17 Boardwalk Pearson IM 2018 Port Elizabeth RSA 8.1 Donaldo Paiva Calvin John Klaasen Lost: 1-0 51 Open
118 2018-03-16 Boardwalk Pearson IM 2018 Port Elizabeth RSA 7.5 Sahaj Grover Calvin John Klaasen Lost: 1-0 55 Open
119 2018-03-15 Boardwalk Pearson IM 2018 Port Elizabeth RSA 6.2 Calvin John Klaasen Daniel Cawdery Draw: 1/2-1/2 9 Open
120 2018-03-15 Boardwalk Pearson IM 2018 Port Elizabeth RSA 5.4 David Silva Calvin John Klaasen Draw: 1/2-1/2 49 Open
121 2018-03-14 Boardwalk Pearson IM 2018 Port Elizabeth RSA 4.3 Calvin John Klaasen Providence Oatlhotse Draw: 1/2-1/2 70 Open
122 2018-03-13 Boardwalk Pearson IM 2018 Port Elizabeth RSA 3.3 Jack Van Zyl-Rudd Calvin John Klaasen Lost: 1-0 48 Open
123 2018-03-13 Boardwalk Pearson IM 2018 Port Elizabeth RSA 2.4 Calvin John Klaasen Rodwell Makoto Draw: 1/2-1/2 39 Open
124 2018-03-12 Boardwalk Pearson IM 2018 Port Elizabeth RSA 1.3 Joseph Mwale Calvin John Klaasen Draw: 1/2-1/2 83 Open
125 2017-12-19 ch-RSA 2017 Cape Town RSA 11.3 Calvin John Klaasen Jacob Dumisani Mnguni Won: 1-0 33 Open
126 2017-12-18 ch-RSA 2017 Cape Town RSA 10.4 Donovan Van den Heever Calvin John Klaasen Draw: 1/2-1/2 25 Open
127 2017-12-17 ch-RSA 2017 Cape Town RSA 9.4 Calvin John Klaasen Johannes Manyedi Mabusela Draw: 1/2-1/2 49 Open
128 2017-12-16 ch-RSA 2017 Cape Town RSA 8.3 Daniel Barrish Calvin John Klaasen Draw: 1/2-1/2 29 Open
129 2017-12-15 ch-RSA 2017 Cape Town RSA 7.5 Calvin John Klaasen Charles De Villiers Draw: 1/2-1/2 45 Open
130 2017-12-14 ch-RSA 2017 Cape Town RSA 6.2 Watu Kobese Calvin John Klaasen Draw: 1/2-1/2 18 Open
131 2017-12-13 ch-RSA 2017 Cape Town RSA 5.6 Calvin John Klaasen Dennis Ovcina Draw: 1/2-1/2 22 Open
132 2017-12-12 ch-RSA 2017 Cape Town RSA 4.1 Mohamed Ozayr Bhawoodien Calvin John Klaasen Won: 0-1 27 Open
133 2017-12-11 ch-RSA 2017 Cape Town RSA 3.6 Benjamin Vincent Hercules Calvin John Klaasen Won: 0-1 54 Open
134 2017-12-10 ch-RSA 2017 Cape Town RSA 2.2 Calvin John Klaasen Ryan Pierre Van Rensburg Draw: 1/2-1/2 34 Open
135 2017-12-09 ch-RSA 2017 Cape Town RSA 1.5 Kgaugelo Mosetlhe Calvin John Klaasen Won: 0-1 40 Open
136 2017-05-01 PSS IM Norm 2017 Johannesburg RSA 9.5 Jha Sriram Calvin John Klaasen Draw: 1/2-1/2 25 Open
137 2017-04-30 PSS IM Norm 2017 Johannesburg RSA 8.2 Calvin John Klaasen Sahaj Grover Lost: 0-1 41 Open
138 2017-04-30 PSS IM Norm 2017 Johannesburg RSA 7.4 Rodwell Makoto Calvin John Klaasen Draw: 1/2-1/2 18 Open
139 2017-04-29 PSS IM Norm 2017 Johannesburg RSA 6.3 Calvin John Klaasen Spencer Masango Won: 1-0 39 Open
140 2017-04-28 PSS IM Norm 2017 Johannesburg RSA 5.3 Kgaugelo Mosetlhe Calvin John Klaasen Lost: 1-0 39 Open
141 2017-04-28 PSS IM Norm 2017 Johannesburg RSA 4.4 Calvin John Klaasen Daniel Barrish Draw: 1/2-1/2 65 Open
142 2017-04-27 PSS IM Norm 2017 Johannesburg RSA 3.2 Daniel Jere Calvin John Klaasen Draw: 1/2-1/2 65 Open
143 2017-04-27 PSS IM Norm 2017 Johannesburg RSA 2.5 Calvin John Klaasen Farrukh Amonatov Draw: 1/2-1/2 32 Open
144 2017-04-26 PSS IM Norm 2017 Johannesburg RSA 1.1 Calvin John Klaasen Benjamin Vincent Hercules Draw: 1/2-1/2 40 Open
145 2016-12-04 African Chess Lounge IM Cape Town RSA 9.1 Calvin John Klaasen Daud Amini Won: 1-0 36 Open
146 2016-12-03 African Chess Lounge IM Cape Town RSA 8.5 Daniel Anwuli Calvin John Klaasen Won: 0-1 57 Open
147 2016-12-02 African Chess Lounge IM Cape Town RSA 7.2 Calvin John Klaasen Ryan Pierre Van Rensburg Draw: 1/2-1/2 17 Open
148 2016-12-01 African Chess Lounge IM Cape Town RSA 6.4 Daniel Jere Calvin John Klaasen Lost: 1-0 34 Open
149 2016-11-30 African Chess Lounge IM Cape Town RSA 5.3 Calvin John Klaasen Daniel Barrish Won: 1-0 31 Open
150 2016-11-29 African Chess Lounge IM Cape Town RSA 4.3 Watu Kobese Calvin John Klaasen Lost: 1-0 38 Open
  1. vs Jure SkoberneLost · 1-0Black · 2018-09-25 · Round 2.1743rd Olympiad 2018
  2. vs Samuel Gabius BritusWon · 1-0White · 2018-09-24 · Round 1.8543rd Olympiad 2018
  3. vs Chudasama AnkitWon · 0-1Black · 2018-07-03 · Round 9.18ch-Commonwealth 2018
  4. vs Paul GluckmanWon · 1-0White · 2018-07-02 · Round 8.21ch-Commonwealth 2018
  5. vs Mukherjee ArpitaDraw · ½–½White · 2018-07-01 · Round 7.23ch-Commonwealth 2018
  6. vs Sreeshwan MaralakshikariLost · 1-0Black · 2018-06-29 · Round 4.2ch-Commonwealth 2018
  7. vs Milanto Harifidy RalisonDraw · ½–½White · 2018-05-01 · Round 9.2Capablanca Festival GM
  8. vs Aleksa StrikovicDraw · ½–½Black · 2018-04-30 · Round 8.4Capablanca Festival GM
  9. vs Alejandro HoffmanDraw · ½–½White · 2018-04-30 · Round 7.3Capablanca Festival GM
  10. vs Jack Van Zyl-RuddDraw · ½–½Black · 2018-04-29 · Round 6.3Capablanca Festival GM
  11. vs Bernardo Roselli MailheDraw · ½–½White · 2018-04-28 · Round 5.4Capablanca Festival GM
  12. vs Daniel CawderyDraw · ½–½Black · 2018-04-28 · Round 4.2Capablanca Festival GM
  13. vs Sahaj GroverLost · 0-1White · 2018-04-27 · Round 3.5Capablanca Festival GM
  14. vs Andrew KayondeDraw · ½–½Black · 2018-04-27 · Round 2.1Capablanca Festival GM
  15. vs Watu KobeseLost · 1-0Black · 2018-04-26 · Round 1.5Capablanca Festival GM
  16. vs Geoffrey LuanjaLost · 0-1White · 2018-03-18 · Round 9.5Boardwalk Pearson IM 2018
  17. vs Donaldo PaivaLost · 1-0Black · 2018-03-17 · Round 8.1Boardwalk Pearson IM 2018
  18. vs Sahaj GroverLost · 1-0Black · 2018-03-16 · Round 7.5Boardwalk Pearson IM 2018
  19. vs Daniel CawderyDraw · ½–½White · 2018-03-15 · Round 6.2Boardwalk Pearson IM 2018
  20. vs David SilvaDraw · ½–½Black · 2018-03-15 · Round 5.4Boardwalk Pearson IM 2018
  21. vs Providence OatlhotseDraw · ½–½White · 2018-03-14 · Round 4.3Boardwalk Pearson IM 2018
  22. vs Jack Van Zyl-RuddLost · 1-0Black · 2018-03-13 · Round 3.3Boardwalk Pearson IM 2018
  23. vs Rodwell MakotoDraw · ½–½White · 2018-03-13 · Round 2.4Boardwalk Pearson IM 2018
  24. vs Joseph MwaleDraw · ½–½Black · 2018-03-12 · Round 1.3Boardwalk Pearson IM 2018
  25. vs Jacob Dumisani MnguniWon · 1-0White · 2017-12-19 · Round 11.3ch-RSA 2017
  26. vs Donovan Van den HeeverDraw · ½–½Black · 2017-12-18 · Round 10.4ch-RSA 2017
  27. vs Johannes Manyedi MabuselaDraw · ½–½White · 2017-12-17 · Round 9.4ch-RSA 2017
  28. vs Daniel BarrishDraw · ½–½Black · 2017-12-16 · Round 8.3ch-RSA 2017
  29. vs Charles De VilliersDraw · ½–½White · 2017-12-15 · Round 7.5ch-RSA 2017
  30. vs Watu KobeseDraw · ½–½Black · 2017-12-14 · Round 6.2ch-RSA 2017
  31. vs Dennis OvcinaDraw · ½–½White · 2017-12-13 · Round 5.6ch-RSA 2017
  32. vs Mohamed Ozayr BhawoodienWon · 0-1Black · 2017-12-12 · Round 4.1ch-RSA 2017
  33. vs Benjamin Vincent HerculesWon · 0-1Black · 2017-12-11 · Round 3.6ch-RSA 2017
  34. vs Ryan Pierre Van RensburgDraw · ½–½White · 2017-12-10 · Round 2.2ch-RSA 2017
  35. vs Kgaugelo MosetlheWon · 0-1Black · 2017-12-09 · Round 1.5ch-RSA 2017
  36. vs Jha SriramDraw · ½–½Black · 2017-05-01 · Round 9.5PSS IM Norm 2017
  37. vs Sahaj GroverLost · 0-1White · 2017-04-30 · Round 8.2PSS IM Norm 2017
  38. vs Rodwell MakotoDraw · ½–½Black · 2017-04-30 · Round 7.4PSS IM Norm 2017
  39. vs Spencer MasangoWon · 1-0White · 2017-04-29 · Round 6.3PSS IM Norm 2017
  40. vs Kgaugelo MosetlheLost · 1-0Black · 2017-04-28 · Round 5.3PSS IM Norm 2017
  41. vs Daniel BarrishDraw · ½–½White · 2017-04-28 · Round 4.4PSS IM Norm 2017
  42. vs Daniel JereDraw · ½–½Black · 2017-04-27 · Round 3.2PSS IM Norm 2017
  43. vs Farrukh AmonatovDraw · ½–½White · 2017-04-27 · Round 2.5PSS IM Norm 2017
  44. vs Benjamin Vincent HerculesDraw · ½–½White · 2017-04-26 · Round 1.1PSS IM Norm 2017
  45. vs Daud AminiWon · 1-0White · 2016-12-04 · Round 9.1African Chess Lounge IM
  46. vs Daniel AnwuliWon · 0-1Black · 2016-12-03 · Round 8.5African Chess Lounge IM
  47. vs Ryan Pierre Van RensburgDraw · ½–½White · 2016-12-02 · Round 7.2African Chess Lounge IM
  48. vs Daniel JereLost · 1-0Black · 2016-12-01 · Round 6.4African Chess Lounge IM
  49. vs Daniel BarrishWon · 1-0White · 2016-11-30 · Round 5.3African Chess Lounge IM
  50. vs Watu KobeseLost · 1-0Black · 2016-11-29 · Round 4.3African Chess Lounge IM

FIDE tournaments

DateTournamentTypeScore
2026-08-01Cape Town Chess Fedireation Club League 2026 (A)Classical2½

All tournament results