Surname or Chess SA id..
Chess SA Region AOC Mzansi 2026

PLAYER PAGE

Sebastian Stelloh

1150145631
Johannesburg Metro (GJM)
Personal
Main rating
Rating 1687.9
K-factor 28
Floor 1129
Highest 1784.2 (2026-01-01)
Min/Max +/- allowed 72
Rating Change
()
Games 10
Score 6.5
We 6.74
SWe -0.2
Temp +/- -5.6
Penalties 0
Weight perform 1541.2
Final +/- -5.6
New Rating
()
Rating 1682.3
K-factor 28
Floor 1129
Highest 1784.2 (2026-01-01)
Min/Max +/- allowed 72.1
Standard rating
Rating 1682.6
K-factor 28
Floor 1257.5
Highest 1757.5 (2026-09-01)
Min/Max +/- allowed 74.9
Rating Change
()
Games 10
Score 6.5
We 6.78
SWe -0.28
Temp +/- -7.8
Penalties 0
Weight perform 1541.2
Final +/- -7.8
New Rating
()
Rating 1674.8
K-factor 28
Floor 1257.5
Highest 1757.5 (2026-09-01)
Min/Max +/- allowed 74.9
Rapid rating
Rating 1442.9
K-factor 32
Floor 1022.1
Highest 1522.1 (2025-11-30)
Min/Max +/- allowed 104.8
Rating Change
()
Games 0
Score 0
We 0
SWe 0
Temp +/- 0
Penalties 0
Weight perform 1418.9
Final +/- 0
New Rating
()
Rating 1442.9
K-factor 32
Floor 1022.1
Highest 1522.1 (2025-11-30)
Min/Max +/- allowed 104.8
Blitz rating
Rating 1309.4
K-factor 36
Floor 809.4
Highest 1309.4 (2025-05-05)
Min/Max +/- allowed 141.9
Rating Change
()
Games 0
Score 0
We 0
SWe 0
Temp +/- 0
Penalties 0
Weight perform 0
Final +/- 0
New Rating
()
Rating 1309.4
K-factor 36
Floor 809.4
Highest 1309.4 (2025-05-05)
Min/Max +/- allowed 141.9
Rating Graph
Tournaments
# Tournament Type Start End Host Rounds Rating Games Score Perform Rat+/- Details
1 Gauteng Closed Chess Championships 2026 (U12 Open) Standard 2026-10-17 2026-10-17 Ekurhuleni (GE) 5 1687.9 5 3 1632.1 -8.4 Details
2 2026 Tshwane Chess Club Clash Open Team Tournament (Junior) Standard 2026-09-24 2026-09-24 Tshwane (GTP) 5 1687.9 5 3.5 1713.9 2.8 Details
# Tournament Type Start End Host Rounds Rating Games Score Perform Rat+/- Details
1 5th KHELO INDIA - LCA Chess Tournament 2026 (D) Standard 2026-09-20 2026-09-20 Johannesburg Metro (GJM) 5 1757.5 5 3 1227.4 -42.6 Details
2 Sedibeng Chess Open 2026 (B) Standard 2026-09-05 2026-09-05 Sedibeng (GSV) 5 1757.5 5 3 1416 -27.1 Details
3 Midrand Juniors Classical Tournament 2026 (U12) Standard 2026-08-29 2026-08-29 Johannesburg Metro (GJM) 5 1757.5 3 2 1398.5 -11.6 Details
4 Ekurhuleni 3rd Standard Tournament 2026 (D) Standard 2026-08-08 2026-08-08 Ekurhuleni (GE) 5 1757.5 4 3 1789.2 9.8 Details
5 JMC Closed 2026 (U12) Standard 2026-08-01 2026-08-02 Johannesburg Metro (GJM) 5 1757.5 5 4.5 1774.2 14.4 Details
6 Knights Watch Winter Classic 2026 (D) Standard 2026-07-04 2026-07-04 Johannesburg Metro (GJM) 5 1660.5 5 4 1755 12.2 Details
7 4th Khelo India - LCA Chess Tournament 2026 (D) Standard 2026-07-12 2026-07-12 Johannesburg Metro (GJM) 5 1660.5 5 4 1845 28.3 Details
8 JMC Helpmekaar 2026 (A) Standard 2026-05-31 2026-05-31 Johannesburg Metro (GJM) 5 1679.5 5 1 1581.3 -19 Details
9 Spartans Bishops 2026 (Bishops) Standard 2026-05-01 2026-05-01 Sarah Baartman (ESB) 5 1707.2 5 3 1594.9 -12.2 Details
10 Sixth Knight Riders Juniors Open Chess Tournament 2026 (A+B) Standard 2026-05-10 2026-05-10 Johannesburg Metro (GJM) 5 1707.2 5 3 1604.8 -9.9 Details
11 3rd KHELO INDIA - LCA Chess Tournament 2026 (D) Standard 2026-04-19 2026-04-19 Johannesburg Metro (GJM) 5 1635 5 4.5 1885.1 35.3 Details
12 South African Junior Closed Chess Championship 2026 (U12 Open) Classical 2026-03-28 2026-04-02 Bojanala Platina (NBR) 9 1635 9 6 1810.3 50.7 Details
13 MCA Summer Heat Classic 2026 (Expert) Standard 2026-03-21 2026-03-21 Johannesburg Metro (GJM) 5 1707.2 4 0 1358.4 -38.2 Details
14 Chess Power House Boksburg Open 2026 (B) Standard 2026-03-13 2026-03-13 Ekurhuleni (GE) 5 1707.2 5 4 1667.2 -3.8 Details
15 First Knight Riders Rapid Open Chess Tournament 2026 (A) Rapid 2026-03-15 2026-03-15 Johannesburg Metro (GJM) 6 1707.2 5 1 1269.8 -29.5 Details
16 3rd Knight Riders Juniors Open Chess Tournament 2026 (A) Standard 2026-03-08 2026-03-08 Johannesburg Metro (GJM) 5 1707.2 1 0 1334 -11.2 Details
17 West Rand Juniors 2026 (U12) Standard 2026-03-07 2026-03-07 West Rand (GWR) 5 1707.2 0 0 500 0 Details
18 2nd Knight Riders Juniors Open Chess Tournament 2026 (A+B) Standard 2026-02-21 2026-02-21 Johannesburg Metro (GJM) 5 1765.8 5 4.5 1769.3 1.8 Details
19 2026 JMC Kick off Tournament (A) Standard 2026-02-01 2026-02-01 Johannesburg Metro (GJM) 5 1765.8 5 1.5 1536.7 -22.9 Details
20 2025 Mzansi Individual Championships (U12 Open) Classical 2025-12-17 2025-12-20 Nelson Mandela Bay (ENM) 6 1685.8 6 5 1816.1 17 Details
21 2025 Mzansi Inter Provincial Team Championships (U12 Combined) Standard 2025-12-15 2025-12-17 Nelson Mandela Bay (ENM) 6 1685.8 6 5 1804.2 14.1 Details
22 Gauteng Inter-Region at Emerald Resort 2025 (U12 Championship) Standard 2025-12-06 2025-12-07 Sedibeng (GSV) 5 1685.8 5 4 1910.4 24.1 Details
23 Bojanala's Merry ChessMas 2025 (Center Pawns) Standard 2025-11-29 2025-11-29 Bojanala Platina (NBR) 5 1685.8 5 3 1546.4 -12.6 Details
24 MCA Year End Rapid 2025 (U12) Rapid 2025-11-01 2025-11-01 Johannesburg Metro (GJM) 5 1621.2 5 5 1946.7 23.5 Details
25 UJ @20years Open Chess Championship 2025 (E) Standard 2025-10-18 2025-10-18 Johannesburg Metro (GJM) 5 1573 5 5 1725.4 15.9 Details
26 FIDE World Cadet Championships 2025 Classical 2025-09-19 2025-09-30 FIDE (FID) 11 1573 11 4 1501.1 -19.6 Details
27 Fourth Knight Riders Juniors Open Chess Tournament 2025 (C) Standard 2025-08-31 2025-08-31 Johannesburg Metro (GJM) 5 1550.9 4 4 1696.1 11.6 Details
28 GoForChess Junior Chess Championships 2025 (U12) Standard 2025-09-14 2025-09-14 Johannesburg Metro (GJM) 5 1550.9 3 1 1236.3 -17.6 Details
29 JMC Closed 2025 (U12) Standard 2025-08-09 2025-08-10 Johannesburg Metro (GJM) 5 1520.4 5 4 1709.6 21.8 Details
30 South African Open 2025 (U12 Open) Classical 2025-07-03 2025-07-05 Johannesburg Metro (GJM) 5 1514.9 5 3.5 1554.4 4 Details
31 Third Knight Riders Junior Open 2025 (B+C) Standard 2025-06-22 2025-06-22 Johannesburg Metro (GJM) 5 1542.2 4 1 1218.6 -25.2 Details
32 Knight Riders Juniors Open Chess Tournament 2025 (A) Standard 2025-05-24 2025-05-24 Johannesburg Metro (GJM) 5 1560.7 0 0 0 0 Details
33 Knight Riders Juniors Open Chess Tournament 2025 (D) Standard 2025-05-24 2025-05-24 Johannesburg Metro (GJM) 5 1560.7 3 3 1671.5 8.6 Details
34 Chess Power House Randburg Rapid 2025 (A) Rapid 2025-05-11 2025-05-11 Johannesburg Metro (GJM) 6 1560.7 4 2 1438.9 -4.4 Details
35 Chess Power House Randburg Rapid 2025 (B) Rapid 2025-05-11 2025-05-11 Johannesburg Metro (GJM) 5 1560.7 4 4 1785.1 8.3 Details
36 Moja Chess Extravaganza 2025 (U12) Classical 2025-04-26 2025-04-28 Johannesburg Metro (GJM) 5 1560.7 5 2.5 1353.9 -23.2 Details
37 2025 Silver Lakes Chess Club Open Chess Tournament (C) Standard 2025-05-03 2025-05-03 Tshwane (GTP) 5 1560.7 5 3 1527 -2.5 Details
38 FIDE World Cadet & Youth Rapid & Blitz Championships 2025 (Blitz) Blitz 2025-04-16 2025-04-17 Geece (GRE) 11 1495.7 11 5 1499.9 0.5 Details
39 FIDE World Cadet & Youth Rapid & Blitz Championships 2025 (Rapid) Rapid 2025-04-13 2025-04-15 Greece (GRE) 11 1495.7 11 4.5 1513.1 2.3 Details
40 South African Junior Closed Chess Championships 2025 (U10 Open) Classical 2025-03-31 2025-04-05 Cape Winelands (WCW) 9 1495.7 9 6 1698.2 43.6 Details
41 JMC Crawford Ruimsig 2025 (B) Standard 2025-03-01 2025-03-01 Johannesburg Metro (GJM) 5 1493.3 5 2 1347.3 -14.9 Details
42 Knight Riders Open Chess Tournament 2025 (D) Standard 2025-02-22 2025-02-22 Johannesburg Metro (GJM) 5 1496.4 5 4 1567.1 6.5 Details
43 JMC Rapid The Bridge School 2025 (Open) Rapid 2025-02-23 2025-02-23 Johannesburg Metro (GJM) 7 1496.4 7 4 1432 -4.3 Details
44 2025 Blou Bul Open Chess Tournament (B) Standard 2025-02-08 2025-02-08 Tshwane (GTP) 5 1496.4 5 2 1516.6 1.2 Details
45 JMC Kick Off 2025 (B) Standard 2025-02-02 2025-02-02 Johannesburg Metro (GJM) 5 1496.4 5 2 1351.2 -14.8 Details
46 2025 Tshwane Chess OPEN Registration Tournament (A1) Standard 2025-01-25 2025-01-25 Tshwane (GTP) 5 1555.6 5 0 1115.6 -42.3 Details
47 Mzansi Interprovincial Youth Chess Championships 2024 (U10 Open Championship) Classical 2024-12-16 2024-12-19 Capricorn (LCP) 7 1584.2 7 3.5 1413.9 -27 Details
48 Gauteng Inter-Region at UJ 2024 (U10 Open) Standard 2024-12-07 2024-12-08 Johannesburg Metro (GJM) 5 1584.2 5 3 1634.4 6.4 Details
49 Laerskool Doringkloof Primary Open Chess Tournament 2024 (U10) Standard 2024-10-19 2024-10-19 Tshwane (GTP) 5 1582.3 5 4 1586.9 1.3 Details
50 Knight Riders Spring Chess Tournament 2024 (A) Standard 2024-09-28 2024-09-28 Johannesburg Metro (GJM) 5 1609.5 3 2 1584.3 -2 Details
Game statistics ( )
Games 5
Wins 3
Draws 0
Losses 2
White 3
Black 2
White wins 3
Black wins 0
Score 3
Percent 60
Dp 85
AOR 1547.1
Performance 1632.1
Game statistics ()
Games 96
Wins 54
Draws 9
Losses 33
White 49
Black 47
White wins 29
Black wins 25
Score 58.5
Percent 60.9
Dp 93
AOR 1529.7
Performance 1622.7
Game statistics (History)
Games 511
Wins 302
Draws 36
Losses 173
White 254
Black 257
White wins 153
Black wins 149
Score 320
Percent 62.6
Dp 107.3
AOR 1392.7
Performance 1500
Rankings (Main)
National
Overall 622
Gender 584
Age group 24
Gender/Age 21
Provincial
Overall 234
Gender 218
Age group 13
Gender/Age 11
Regional
Overall 99
Gender 89
Age group 10
Gender/Age 8
Rankings (Standard)
National
Overall 597
Gender 563
Age group 28
Gender/Age 26
Provincial
Overall 228
Gender 215
Age group 15
Gender/Age 13
Regional
Overall 92
Gender 83
Age group 11
Gender/Age 9
Rankings (Rapid)
National
Overall 691
Gender 616
Age group 72
Gender/Age 60
Provincial
Overall 144
Gender 125
Age group 13
Gender/Age 13
Regional
Overall 61
Gender 56
Age group 4
Gender/Age 4
Rankings (Blitz)
National
Overall 328
Gender 315
Age group 8
Gender/Age 8
Provincial
Overall 105
Gender 98
Age group 5
Gender/Age 5
Regional
Overall 65
Gender 59
Age group 5
Gender/Age 5
Performance ( )
Games 5
Score 3
Percent 60
Aor 1547.1
Dp 85
Prat 1632.1
Performance ()
Games 96
Score 58.5
Percent 60.9
Aor 1529.7
Dp 93
Prat 1622.7
Performance (12 months)
Games 123
Score 80.5
Percent 65.4
Aor 1531.4
Dp 131.3
Prat 1662.7
Performance (History)
Games 511
Score 320
Percent 62.6
Aor 1392.7
Dp 107.3
Prat 1500
Top 5 opponents most often played
Type # Opponent Games White Black First tournament Last tournament Details
Overall 1 Ma, M (Matthew) 8 4 4 JNW Open - Trinityhouse Little Falls 2023 (U10) 2026 JMC Kick off Tournament (A) Details
Overall 2 Joubert, J (Joshua) 8 5 3 2023 South African Junior Closed Chess Championships (U8 Open) JMC Closed 2026 (U12) Details
Overall 3 Goncalves, E (Emilio) 7 2 5 JNW Open - Classic - Crawford 2024 (U10) 4th Khelo India - LCA Chess Tournament 2026 (D) Details
Overall 4 Brits, E (Etienne) 6 2 4 Chess Power House 2023 (C) 4th Khelo India - LCA Chess Tournament 2026 (D) Details
Overall 5 Zhu, R (Ryan Yuancheng) 5 4 1 Chess Power House 1st Rapid 2024 (C) MCA Year End Rapid 2025 (U12) Details
Standard 1 Joubert, J (Joshua) 8 5 3 2023 South African Junior Closed Chess Championships (U8 Open) JMC Closed 2026 (U12) Details
Standard 2 Ma, M (Matthew) 7 3 4 JNW Open - Trinityhouse Little Falls 2023 (U10) 2026 JMC Kick off Tournament (A) Details
Standard 3 Goncalves, E (Emilio) 7 2 5 JNW Open - Classic - Crawford 2024 (U10) 4th Khelo India - LCA Chess Tournament 2026 (D) Details
Standard 4 Exarchos, I (Isabella) 5 4 1 JMC 2nd Trials 2022 (U8) JMC Helpmekaar Kollege Tournament 2024 (U10) Details
Standard 5 Le Kay, A (Alexa) 5 1 4 JMC 2nd Trials 2022 (U8) JMC Helpmekaar Kollege Tournament 2024 (U10) Details
Rapid 1 Zhu, R (Ryan Yuancheng) 3 2 1 Chess Power House 1st Rapid 2024 (C) MCA Year End Rapid 2025 (U12) Details
Rapid 2 Franklin, G (Gabriel) 2 1 1 Chess Power House Rapid 2022 (U8) CPH Chess Clubs Challenge 2022 (Primary Schools) Details
Rapid 3 Brits, E (Etienne) 2 0 2 Chess Power House 1st Rapid 2024 (C) CPH St Andrew's Rapid 2024 (C) Details