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

PLAYER PAGE

Sebastian Stelloh

1150145631
Johannesburg Metro (GJM)
Personal
Main rating
Rating 1757.5
K-factor 28
Floor 1129
Highest 1784.2 (2026-01-01)
Min/Max +/- allowed 72
Rating Change
()
Games 5
Score 3
We 4.16
SWe -0.97
Temp +/- -27.1
Penalties 0
Weight perform 1650.1
Final +/- -27.1
New Rating
()
Rating 1730.4
K-factor 28
Floor 1129
Highest 1784.2 (2026-01-01)
Min/Max +/- allowed 72.1
Standard rating
Rating 1757.5
K-factor 28
Floor 1257.5
Highest 1757.5 (2026-09-01)
Min/Max +/- allowed 74.9
Rating Change
()
Games 5
Score 3
We 4.21
SWe -1.21
Temp +/- -33.9
Penalties 0
Weight perform 1650.1
Final +/- -33.9
New Rating
()
Rating 1723.6
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 1417.7
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 Sedibeng Chess Open 2026 (B) Standard 2026-09-05 2026-09-05 Sedibeng (GSV) 5 1757.5 5 3 1416 -27.1 Details
# Tournament Type Start End Host Rounds Rating Games Score Perform Rat+/- Details
1 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
2 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
3 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
4 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
5 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
6 JMC Helpmekaar 2026 (A) Standard 2026-05-31 2026-05-31 Johannesburg Metro (GJM) 5 1679.5 5 1 1581.3 -19 Details
7 Spartans Bishops 2026 (Bishops) Standard 2026-05-01 2026-05-01 Sarah Baartman (ESB) 5 1707.2 5 3 1594.9 -12.2 Details
8 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
9 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
10 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
11 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
12 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
13 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
14 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
15 West Rand Juniors 2026 (U12) Standard 2026-03-07 2026-03-07 West Rand (GWR) 5 1707.2 0 0 500 0 Details
16 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
17 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
18 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
19 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
20 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
21 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
22 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
23 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
24 FIDE World Cadet Championships 2025 Classical 2025-09-19 2025-09-30 FIDE (FID) 11 1573 11 4 1501.1 -19.6 Details
25 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
26 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
27 JMC Closed 2025 (U12) Standard 2025-08-09 2025-08-10 Johannesburg Metro (GJM) 5 1520.4 5 4 1709.6 21.8 Details
28 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
29 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
30 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
31 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
32 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
33 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
34 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
35 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
36 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
37 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
38 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
39 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
40 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
41 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
42 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
43 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
44 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
45 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
46 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
47 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
48 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
49 2024 Moja Chess Extravaganza (D) Standard 2024-09-25 2024-09-26 Frances Baard (NCF) 5 1609.5 5 3 1437.6 -17.5 Details
50 Bojanala's FIDE In The Sparkling Waters 2024 (Junior Champs) Classical 2024-08-17 2024-08-17 Bojanala Platina (NBR) 5 1497.5 5 4 1664.9 20.6 Details
Game statistics ( )
Games 5
Wins 3
Draws 0
Losses 2
White 3
Black 2
White wins 2
Black wins 1
Score 3
Percent 60
Dp 85
AOR 1331
Performance 1416
Game statistics ()
Games 81
Wins 45
Draws 8
Losses 28
White 41
Black 40
White wins 23
Black wins 22
Score 49
Percent 60.5
Dp 89.2
AOR 1551.6
Performance 1640.8
Game statistics (History)
Games 496
Wins 293
Draws 35
Losses 168
White 246
Black 250
White wins 147
Black wins 146
Score 310.5
Percent 62.6
Dp 107.1
AOR 1392.2
Performance 1499.3
Rankings (Main)
National
Overall 360
Gender 337
Age group 6
Gender/Age 6
Provincial
Overall 142
Gender 132
Age group 2
Gender/Age 2
Regional
Overall 59
Gender 53
Age group 2
Gender/Age 2
Rankings (Standard)
National
Overall 349
Gender 326
Age group 10
Gender/Age 10
Provincial
Overall 142
Gender 131
Age group 4
Gender/Age 4
Regional
Overall 57
Gender 51
Age group 4
Gender/Age 4
Rankings (Rapid)
National
Overall 677
Gender 603
Age group 71
Gender/Age 59
Provincial
Overall 141
Gender 122
Age group 11
Gender/Age 11
Regional
Overall 60
Gender 55
Age group 3
Gender/Age 3
Rankings (Blitz)
National
Overall 322
Gender 311
Age group 8
Gender/Age 8
Provincial
Overall 105
Gender 98
Age group 5
Gender/Age 5
Regional
Overall 63
Gender 57
Age group 5
Gender/Age 5
Performance ( )
Games 5
Score 3
Percent 60
Aor 1331
Dp 85
Prat 1416
Performance ()
Games 81
Score 49
Percent 60.5
Aor 1551.6
Dp 89.2
Prat 1640.8
Performance (12 months)
Games 127
Score 81
Percent 63.8
Aor 1540.3
Dp 117.1
Prat 1657.5
Performance (History)
Games 496
Score 310.5
Percent 62.6
Aor 1392.2
Dp 107.1
Prat 1499.3
Top 5 opponents most often played
Type # Opponent Games White Black First tournament Last tournament Details
Overall 1 Joubert, J (Joshua) 8 5 3 2023 South African Junior Closed Chess Championships (U8 Open) JMC Closed 2026 (U12) Details
Overall 2 Ma, M (Matthew) 8 4 4 JNW Open - Trinityhouse Little Falls 2023 (U10) 2026 JMC Kick off Tournament (A) 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 Goncalves, E (Emilio) 7 2 5 JNW Open - Classic - Crawford 2024 (U10) 4th Khelo India - LCA Chess Tournament 2026 (D) Details
Standard 3 Ma, M (Matthew) 7 3 4 JNW Open - Trinityhouse Little Falls 2023 (U10) 2026 JMC Kick off Tournament (A) Details
Standard 4 Le Kay, A (Alexa) 5 1 4 JMC 2nd Trials 2022 (U8) JMC Helpmekaar Kollege Tournament 2024 (U10) Details
Standard 5 Mannar, A (Aaryan) 5 2 3 JMC Closed Aug 2023 (U10) GoForChess Junior Chess Championships 2025 (U12) 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