PLAYER PAGE
Personal

Sadalla, J (Johnny)
Chess SA id
1100192158FIDE id
?Date of birth
2010-02-12 (U16)Gender
MaleRegion
Tshwane (GTP)Citizen
RSATitles
Chess SA registered
NoLast active game
2025-09-21Personal details last changed
1900-01-01Junior GPX Games
35Junior GPX Points
1463.7Item | Main | Standard | Rapid | Blitz |
---|---|---|---|---|
Rating | 1527 | 1522.6 | 1195.4 | 1200 |
Raw rating | 1516.1 | 1515.6 | 1195.4 | 1200 |
Weighted rating | 1396.3 | 1414.4 | 1194.5 | 1200 |
Weighted performance | 1527 | 1522.6 | 0 | 0 |
Floor | 1016.1 | 1015.6 | 710.8 | 700 |
K-factor | 32 | 32 | 36 | 36 |
Min/Max rating change allowed | 105.7 | 105.8 | 166.9 | 165.8 |
Highest rating | 1575.52024-02-01 | 15682024-02-01 | 1237.12024-03-01 | 12002024-02-01 |
Highest raw rating | 1516.12025-09-30 | 1515.62025-09-30 | 1210.82024-04-01 | 12002024-02-01 |
Highest weighted rating | 1493.22024-10-01 | 1485.92024-10-01 | 1210.82024-07-01 | 12002024-02-01 |
Highest weighted performance | 1575.52024-02-01 | 15682024-02-01 | 1237.12024-03-01 | 12002024-02-01 |
Prediction | ||||
---|---|---|---|---|
Item | Main | Standard | Rapid | Blitz |
Rating change | -0.5 | -0.5 | 0 | 0 |
New rating | 1526.5 | 1522.1 | 1195.4 | 1200 |
Analysis | ||||
Rating | 1527 | 1522.6 | 1195.4 | 1200 |
Raw rating | 1516.1 | 1515.6 | 1195.4 | 1200 |
Weighted rating | 1396.3 | 1414.4 | 1194.5 | |
Weighted performance | 1527 | 1522.6 | 0 | |
K-factor | 32 | 32 | 36 | 36 |
Floor | 1016.1 | 1015.6 | 710.8 | 700 |
Max/Min rating change allowed | 105.7 | 105.8 | 166.9 | 165.8 |
Games | 0 | 0 | 0 | 0 |
Score | 0 | 0 | 0 | 0 |
Expected score | 0 | 0 | 0 | 0 |
Score-Expected | 0 | 0 | 0 | 0 |
Temp raw +/- | 0 | 0 | 0 | 0 |
Final raw +/- | 0 | 0 | 0 | 0 |
New raw rating | 1516.1 | 1515.6 | 1195.4 | 1200 |
New weighted rating | 1410 | 1426.6 | 1194.4 | 1200 |
New weighted performance | 1526.5 | 1522.1 | 0 | 0 |
Temp new rating | 1526.5 | 1522.1 | 1195.4 | 1200 |
Temp new rating +/- | -0.5 | -0.5 | 0 | 0 |
Final new rating +/- | -0.5 | -0.5 | 0 | 0 |
New rating | 1526.5 | 1522.1 | 1195.4 | 1200 |
New K-factor | 32 | 32 | 36 | 36 |
New floor | 1016.1 | 1015.6 | 710.8 | 700 |
Item | Main | Standard | Rapid | Blitz |
---|---|---|---|---|
0 | 0 | 0 | 0 | |
30 | 30 | 0 | 0 | |
74 | 58 | 16 | 0 | |
0 | 0 | 0 | 0 | |
0 | 0 | 0 | 0 | |
0 | 0 | 0 | 0 | |
History | 104 | 88 | 16 | 0 |
Games since | |||||||||||||||||
Main104 | Standard88 | Rapid16 | Blitz0 | ||||||||||||||
Gender | Male | ||||||||||||||||
Age group | U16 | ||||||||||||||||
Region | Tshwane (GTP) | ||||||||||||||||
Province | Gauteng (GT) | ||||||||||||||||
Main | RSA | Province | Region | ||||||||||||||
Overall | 1063 | 375 | 142 | ||||||||||||||
Male | 927 | 325 | 124 | ||||||||||||||
U16 | 131 | 43 | 17 | ||||||||||||||
U16 Male | 107 | 34 | 14 | ||||||||||||||
Standard | RSA | Province | Region | ||||||||||||||
Overall | 1011 | 379 | 145 | ||||||||||||||
Male | 877 | 328 | 127 | ||||||||||||||
U16 | 125 | 43 | 17 | ||||||||||||||
U16 Male | 104 | 34 | 14 | ||||||||||||||
Rapid | RSA | Province | Region | ||||||||||||||
Overall | -1 | -1 | -1 | ||||||||||||||
Male | -1 | -1 | -1 | ||||||||||||||
U16 | -1 | -1 | -1 | ||||||||||||||
U16 Male | -1 | -1 | -1 | ||||||||||||||
Blitz | RSA | Province | Region | ||||||||||||||
Overall | -1 | -1 | -1 | ||||||||||||||
Male | -1 | -1 | -1 | ||||||||||||||
U16 | -1 | -1 | -1 | ||||||||||||||
U16 Male | -1 | -1 | -1 |
Games | Score | % | Dp | AvgOpp | Performance | |
Main | 0 | 0 | 0 | 0 | 0 | 0 |
Standard | 0 | 0 | 0 | 0 | 0 | 0 |
Rapid | 0 | 0 | 0 | 0 | 0 | 0 |
Blitz | 0 | 0 | 0 | 0 | 0 | 0 |
Games | Score | % | Dp | AvgOpp | Performance | |
Main | 30 | 22 | 73.33 | 198.3 | 1326.9 | 1525.3 |
Standard | 30 | 22 | 73.33 | 198.3 | 1326.9 | 1525.3 |
Rapid | 0 | 0 | 0 | 0 | 0 | 0 |
Blitz | 0 | 0 | 0 | 0 | 0 | 0 |
History | ||||||
Games | Score | % | Dp | AvgOpp | Performance | |
Main | 104 | 65 | 62.5 | 106.2 | 1302.7 | 1409 |
Standard | 88 | 57 | 64.77 | 125.6 | 1316 | 1441.5 |
Rapid | 16 | 8 | 50 | 0 | 1229.9 | 1229.9 |
Blitz | 0 | 0 | 0 | 0 | 0 | 0 |
Date | Main | Standard | Rapid | Blitz |
2025-09-30 | 1516.1 | 1515.6 | 1195.4 | 1200 |
2025-09-01 | 1497.3 | 1491.6 | 1195.4 | 1200 |
2025-08-01 | 1493.2 | 1485.9 | 1195.4 | 1200 |
2025-07-01 | 1493.2 | 1485.9 | 1195.4 | 1200 |
2025-06-01 | 1469.3 | 1459.3 | 1195.4 | 1200 |
2025-05-01 | 1380.9 | 1413 | 1195.4 | 1200 |
2025-04-01 | 1380.9 | 1413 | 1195.4 | 1200 |
2025-03-01 | 1380.9 | 1413 | 1195.4 | 1200 |
2025-02-01 | 1364.7 | 1404.5 | 1194.5 | 1200 |
2025-01-01 | 1364.7 | 1404.5 | 1179.1 | 1200 |
2024-12-01 | 1330.9 | 1378.6 | 1179.1 | 1200 |
2024-11-01 | 1330.9 | 1378.6 | 1179.1 | 1200 |
2024-10-01 | 1330.9 | 1378.6 | 1179.1 | 1200 |
2024-09-01 | 1347.8 | 1387.2 | 1199.3 | 1200 |
2024-08-01 | 1347.8 | 1387.2 | 1199.3 | 1200 |
2024-07-01 | 1329.1 | 1337.5 | 1210.8 | 1200 |
2024-06-01 | 1285.1 | 1300.8 | 1210.8 | 1200 |
2024-08-01 | 1309.3 | 1325.3 | 1210.8 | 1200 |
2024-04-01 | 1273.4 | 1282.8 | 1210.8 | 1200 |
2024-03-01 | 1269.7 | 1282.8 | 1200 | 1200 |
2024-02-01 | 1200 | 1200 | 1200 | 1200 |
2024-01-01 | 1200 | 1200 | 1200 | 1200 |
2023-12-01 | 1200 | 1200 | 1200 | 1200 |
2023-11-01 | 1200 | 1200 | 1200 | 1200 |
Comming soon.
Tournaments
# | Tournament | Start | End | Type | Host | Rounds | Games | Score | Cfr | Analysis |
---|
# | Tournament | Start | End | Type | Host | Rounds | Games | Score | Cfr | Analysis |
---|---|---|---|---|---|---|---|---|---|---|
1 | Ekurhuleni Trial 4 2025 (D) | 2025-09-21 | 2025-09-21 | Standard | Ekurhuleni (GE) | 5 | 5 | 4 | Yes | Analysis |
2 | Ekurhuleni Trials 2025 (D) | 2025-07-26 | 2025-07-26 | Standard | Ekurhuleni (GE) | 5 | 5 | 4 | Yes | Analysis |
3 | Ekurhuleni Trial 2 2025 (D) | 2025-06-21 | 2025-06-21 | Standard | Ekurhuleni (GE) | 5 | 5 | 4 | Yes | Analysis |
4 | Ekurhuleni Trials 2025 (D) | 2025-05-24 | 2025-05-24 | Standard | Ekurhuleni (GE) | 5 | 5 | 4 | Yes | Analysis |
5 | CPH May 2025 (B) | 2025-05-03 | 2025-05-03 | Standard | Johannesburg Metro (GJM) | 5 | 5 | 2 | Yes | Analysis |
6 | D6 SH Individual 2025 (U15 Boys) | 2025-02-22 | 2025-02-22 | Standard | Ekurhuleni (GE) | 5 | 5 | 4 | Yes | Analysis |
Last 500 tournaments since 01 January 2018
# | Tournament | Start | End | Type | Host | Rounds | Games | Score | Cfr | Analysis |
---|---|---|---|---|---|---|---|---|---|---|
1 | Ekurhuleni Trial 4 2025 (D) | 2025-09-21 | 2025-09-21 | Standard | Ekurhuleni (GE) | 5 | 5 | 4 | Yes | Analysis |
2 | Ekurhuleni Trials 2025 (D) | 2025-07-26 | 2025-07-26 | Standard | Ekurhuleni (GE) | 5 | 5 | 4 | Yes | Analysis |
3 | Ekurhuleni Trial 2 2025 (D) | 2025-06-21 | 2025-06-21 | Standard | Ekurhuleni (GE) | 5 | 5 | 4 | Yes | Analysis |
4 | Ekurhuleni Trials 2025 (D) | 2025-05-24 | 2025-05-24 | Standard | Ekurhuleni (GE) | 5 | 5 | 4 | Yes | Analysis |
5 | CPH May 2025 (B) | 2025-05-03 | 2025-05-03 | Standard | Johannesburg Metro (GJM) | 5 | 5 | 2 | Yes | Analysis |
6 | D6 SH Individual 2025 (U15 Boys) | 2025-02-22 | 2025-02-22 | Standard | Ekurhuleni (GE) | 5 | 5 | 4 | Yes | Analysis |
7 | Gauteng Inter-Region at UJ 2024 (U16 Candidates) | 2024-12-07 | 2024-12-08 | Standard | Johannesburg Metro (GJM) | 5 | 5 | 3.5 | Yes | Analysis |
8 | Ekurhuleni Chess Soncini Playoffs 2024 (Boys) | 2024-09-14 | 2024-09-14 | Rapid | Ekurhuleni (GE) | 5 | 5 | 2 | Yes | Analysis |
9 | Ekurhuleni Closed 2024 (U16) | 2024-09-21 | 2024-09-21 | Standard | Ekurhuleni (GE) | 5 | 5 | 3.5 | Yes | Analysis |
10 | Mzansi Spring Open 2024 (Intermediate) | 2024-09-07 | 2024-09-07 | Standard | Johannesburg Metro (GJM) | 5 | 5 | 3 | Yes | Analysis |
11 | Ekurhuleni Trails 3 2024 (U16) | 2024-08-24 | 2024-08-24 | Standard | Ekurhuleni (GE) | 5 | 5 | 2.5 | Yes | Analysis |
12 | 2024 D6 Team Finals (U15) | 2024-08-03 | 2024-08-03 | Standard | Ekurhuleni (GE) | 5 | 0 | 0 | No | Analysis |
13 | Gauteng Schools Individuals Finals 2024 (U15 Boys) | 2024-08-17 | 2024-08-17 | Standard | Ekurhuleni (GE) | 5 | 5 | 2 | Yes | Analysis |
14 | Ekurhuleni Trails 2 2024 (U16) | 2024-07-27 | 2024-07-27 | Standard | Ekurhuleni (GE) | 5 | 5 | 3.5 | Yes | Analysis |
15 | 2024 D6 Teams (Pool C U15) | 2024-07-20 | 2024-07-20 | Rapid | Ekurhuleni (GE) | 5 | 4 | 2 | Yes | Analysis |
16 | Chess Power House July Open 2024 (B) | 2024-07-20 | 2024-07-20 | Standard | Johannesburg Metro (GJM) | 5 | 0 | 0 | No | Analysis |
17 | Ekurhuleni Trails 1 2024 (U16) | 2024-06-01 | 2024-06-01 | Standard | Ekurhuleni (GE) | 5 | 5 | 3.5 | Yes | Analysis |
18 | D6 High School Individual Final 2024 (U15 Boys) | 2024-05-18 | 2024-05-18 | Standard | Ekurhuleni (GE) | 5 | 4 | 2.5 | Yes | Analysis |
19 | Chess Power House May Open 2024 (B) | 2024-05-25 | 2024-05-25 | Standard | Johannesburg Metro (GJM) | 5 | 5 | 2 | Yes | Analysis |
20 | 2024 Mid Gauteng Open Chess Tournament (U16) | 2024-05-02 | 2024-05-02 | Standard | Tshwane (GTP) | 5 | 4 | 1 | Yes | Analysis |
21 | Ekurhuleni Open 2024 (C) | 2024-04-06 | 2024-04-06 | Standard | Ekurhuleni (GE) | 5 | 5 | 4 | Yes | Analysis |
22 | Ekurhuleni North Chess Club Open Tournament 2024 (C) | 2024-03-02 | 2024-03-02 | Rapid | Ehlanzeni (MEN) | 7 | 7 | 4 | Yes | Analysis |
23 | 2024 Constantiapark Open (C) | 2024-02-17 | 2024-02-17 | Standard | Tshwane (GTP) | 5 | 5 | 4 | Yes | Analysis |
Top 3 Streaks
# | Games | Start | End | ||||||
---|---|---|---|---|---|---|---|---|---|
1 | 7 | TournamentEkurhuleni Trials 2025 | TournamentEkurhuleni Trial 2 2025 | ||||||
date2025-05-24 | rnd1 | typeStandard | result1 | date2025-06-21 | rnd2 | typeStandard | result1 | ||
OpponentNel, Z (Zachery) | OpponentNdlovu, W (Wayne) | ||||||||
2 | 5 | Tournament2024 D6 Teams | TournamentEkurhuleni Trails 2 2024 | ||||||
date2024-07-20 | rnd4 | typeRapid | result1 | date2024-07-27 | rnd4 | typeStandard | result1 | ||
OpponentMakgwarela, K (Kholofelo) | OpponentHattingh, T (Tiaan) | ||||||||
3 | 4 | TournamentEkurhuleni Trial 2 2025 | TournamentEkurhuleni Trials 2025 | ||||||
date2025-06-21 | rnd4 | typeStandard | result1 | date2025-07-26 | rnd2 | typeStandard | result1 | ||
OpponentDevereux, C (Cayden) | OpponentGupta, M (Mishka) |
# | Games | Start | End | ||||||
---|---|---|---|---|---|---|---|---|---|
1 | 7 | TournamentEkurhuleni Trials 2025 | TournamentEkurhuleni Trial 2 2025 | ||||||
date2025-05-24 | rnd1 | typeStandard | result1 | date2025-06-21 | rnd2 | typeStandard | result1 | ||
OpponentNel, Z (Zachery) | OpponentNdlovu, W (Wayne) | ||||||||
2 | 7 | TournamentEkurhuleni Trails 1 2024 | TournamentEkurhuleni Trails 2 2024 | ||||||
date2024-06-01 | rnd3 | typeStandard | result1 | date2024-07-27 | rnd4 | typeStandard | result1 | ||
OpponentVan Den Berg, Z (Zandre) | OpponentHattingh, T (Tiaan) | ||||||||
3 | 5 | Tournament2024 Constantiapark Open | TournamentEkurhuleni Open 2024 | ||||||
date2024-02-17 | rnd4 | typeStandard | result1 | date2024-04-06 | rnd3 | typeStandard | result1 | ||
OpponentGroenewald, S (Stefan) | OpponentSmith, H (Henre) |
# | Games | Start | End | ||||||
---|---|---|---|---|---|---|---|---|---|
1 | 3 | Tournament2024 D6 Teams | TournamentEkurhuleni Chess Soncini Playoffs 2024 | ||||||
date2024-07-20 | rnd4 | typeRapid | result1 | date2024-09-14 | rnd2 | typeRapid | result1 | ||
OpponentMakgwarela, K (Kholofelo) | OpponentErasmus, M (Max) | ||||||||
2 | 2 | TournamentEkurhuleni North Chess Club Open Tournament 2024 | TournamentEkurhuleni North Chess Club Open Tournament 2024 | ||||||
date2024-03-02 | rnd3 | typeRapid | result1 | date2024-03-02 | rnd4 | typeRapid | result1 | ||
OpponentMogotsi, R (Reatlehile) | OpponentBhika, J (Jyotikka) | ||||||||
3 | 1 | Tournament2024 D6 Teams | Tournament2024 D6 Teams | ||||||
date2024-07-20 | rnd2 | typeRapid | result1 | date2024-07-20 | rnd2 | typeRapid | result1 | ||
OpponentNaidoo, J (Janeshan) | OpponentNaidoo, J (Janeshan) |
# | Games | Start | End |
---|
# | Games | Start | End | ||||||
---|---|---|---|---|---|---|---|---|---|
1 | 4 | TournamentEkurhuleni Trial 2 2025 | TournamentEkurhuleni Trials 2025 | ||||||
date2025-06-21 | rnd4 | typeStandard | result1 | date2025-07-26 | rnd2 | typeStandard | result1 | ||
OpponentDevereux, C (Cayden) | OpponentGupta, M (Mishka) | ||||||||
2 | 4 | TournamentD6 SH Individual 2025 | TournamentD6 SH Individual 2025 | ||||||
date2025-02-22 | rnd2 | typeStandard | result1 | date2025-02-22 | rnd5 | typeStandard | result1 | ||
OpponentMhlongo, A (Andries) | OpponentGarib, A (Arayan) | ||||||||
3 | 4 | TournamentEkurhuleni North Chess Club Open Tournament 2024 | TournamentEkurhuleni Open 2024 | ||||||
date2024-03-02 | rnd7 | typeRapid | result1 | date2024-04-06 | rnd3 | typeStandard | result1 | ||
OpponentJanse Van Vuuren, A (Alexander) | OpponentSmith, H (Henre) |
# | Games | Start | End | ||||||
---|---|---|---|---|---|---|---|---|---|
1 | 5 | Tournament2024 Constantiapark Open | TournamentEkurhuleni Open 2024 | ||||||
date2024-02-17 | rnd4 | typeStandard | result1 | date2024-04-06 | rnd3 | typeStandard | result1 | ||
OpponentGroenewald, S (Stefan) | OpponentSmith, H (Henre) | ||||||||
2 | 4 | TournamentEkurhuleni Trial 2 2025 | TournamentEkurhuleni Trials 2025 | ||||||
date2025-06-21 | rnd4 | typeStandard | result1 | date2025-07-26 | rnd2 | typeStandard | result1 | ||
OpponentDevereux, C (Cayden) | OpponentGupta, M (Mishka) | ||||||||
3 | 4 | TournamentD6 SH Individual 2025 | TournamentD6 SH Individual 2025 | ||||||
date2025-02-22 | rnd2 | typeStandard | result1 | date2025-02-22 | rnd5 | typeStandard | result1 | ||
OpponentMhlongo, A (Andries) | OpponentGarib, A (Arayan) |
# | Games | Start | End | ||||||
---|---|---|---|---|---|---|---|---|---|
1 | 3 | Tournament2024 D6 Teams | TournamentEkurhuleni Chess Soncini Playoffs 2024 | ||||||
date2024-07-20 | rnd4 | typeRapid | result1 | date2024-09-14 | rnd2 | typeRapid | result1 | ||
OpponentMakgwarela, K (Kholofelo) | OpponentErasmus, M (Max) | ||||||||
2 | 2 | TournamentEkurhuleni North Chess Club Open Tournament 2024 | TournamentEkurhuleni North Chess Club Open Tournament 2024 | ||||||
date2024-03-02 | rnd3 | typeRapid | result1 | date2024-03-02 | rnd4 | typeRapid | result1 | ||
OpponentMogotsi, R (Reatlehile) | OpponentBhika, J (Jyotikka) | ||||||||
3 | 1 | Tournament2024 D6 Teams | Tournament2024 D6 Teams | ||||||
date2024-07-20 | rnd2 | typeRapid | result1 | date2024-07-20 | rnd2 | typeRapid | result1 | ||
OpponentNaidoo, J (Janeshan) | OpponentNaidoo, J (Janeshan) |
# | Games | Start | End |
---|
Top 10 opponents most often played
# | Opponent | Main | Standard | Rapid | Blitz | ||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Gms | Score | Dp | Gms | Score | Dp | Gms | Score | Dp | Gms | Score | Dp | ||
Aor | Prat | Aor | Prat | Aor | Prat | Aor | Prat | ||||||
1 | Voogt ,R (Ruan) | 3 | 2 | 141.7 | 3 | 2 | 141.7 | 0 | 0 | 0 | 0 | 0 | 0 |
1304.4 | 1446 | 1304.6 | 1446 | 0 | 0 | 0 | 0 | ||||||
2 | Netshimbupfe ,Y (Yoanda) | 2 | 2 | 425 | 2 | 2 | 425 | 0 | 0 | 0 | 0 | 0 | 0 |
1234.8 | 1659.8 | 1265.4 | 1659.8 | 0 | 0 | 0 | 0 | ||||||
3 | Van Den Berg ,Z (Zandre) | 2 | 1 | 0 | 2 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
1241.8 | 1241.8 | 1249.2 | 1241.8 | 0 | 0 | 0 | 0 | ||||||
4 | Devereux ,C (Cayden) | 2 | 2 | 425 | 2 | 2 | 425 | 0 | 0 | 0 | 0 | 0 | 0 |
1281.4 | 1706.4 | 1269.2 | 1706.4 | 0 | 0 | 0 | 0 | ||||||
5 | Shen Yu ,F (Frank) | 2 | 0.5 | -212.5 | 2 | 0.5 | -212.5 | 0 | 0 | 0 | 0 | 0 | 0 |
1499.8 | 1287.3 | 1481 | 1287.3 | 0 | 0 | 0 | 0 | ||||||
6 | Ndlovu ,W (Wayne) | 2 | 2 | 425 | 2 | 2 | 425 | 0 | 0 | 0 | 0 | 0 | 0 |
1375.5 | 1800.5 | 1354.4 | 1800.5 | 0 | 0 | 0 | 0 | ||||||
7 | Hlope ,S (Siphosethu) | 2 | 0 | -425 | 2 | 0 | -425 | 0 | 0 | 0 | 0 | 0 | 0 |
1354.2 | 929.2 | 1378.2 | 929.2 | 0 | 0 | 0 | 0 | ||||||
8 | Nickols ,C (Christi) | 2 | 2 | 425 | 2 | 2 | 425 | 0 | 0 | 0 | 0 | 0 | 0 |
1268 | 1693 | 1275.8 | 1693 | 0 | 0 | 0 | 0 | ||||||
9 | Sedibe ,T (Thato) | 2 | 1 | 0 | 1 | 1 | 425 | 1 | 0 | -425 | 0 | 0 | 0 |
1271 | 1271 | 1288.4 | 1696 | 1200 | 846 | 0 | 0 | ||||||
10 | Hattingh ,T (Tiaan) | 2 | 1 | 0 | 1 | 1 | 425 | 1 | 0 | -425 | 0 | 0 | 0 |
1344.2 | 1344.2 | 1352.6 | 1769.2 | 961.1 | 919.2 | 0 | 0 |
Norms
# | Norm | Tournament | Start | End | Rounds | Games | Score | Details |
---|---|---|---|---|---|---|---|---|