PLAYER PAGE
Personal
Arlow, JF (Jonathan)
Chess SA id
1080113577FIDE id
?Date of birth
2008-08-21 (U18)Gender
MaleRegion
West Rand (GWR)Citizen
RSATitles
Chess SA registered
NoLast active game
2025-10-18Personal details last changed
1900-01-01Junior GPX Games
44Junior GPX Points
1307.3| Item | Main | Standard | Rapid | Blitz |
|---|---|---|---|---|
| Rating | 1282.3 | 1279 | 1200 | 1200 |
| Raw rating | 1280.8 | 1256.3 | 1200 | 1200 |
| Weighted rating | 1282.3 | 1279 | 1200 | 1200 |
| Weighted performance | 1208.6 | 1195 | 0 | 0 |
| Floor | 854.6 | 849.8 | 700 | 700 |
| K-factor | 36 | 36 | 36 | 36 |
| Min/Max rating change allowed | 147.8 | 153 | 165.8 | 165.8 |
| Highest rating | 1354.62025-05-05 | 1349.82025-05-05 | 12002018-10-01 | 12002018-10-01 |
| Highest raw rating | 1354.62025-05-05 | 1349.82025-05-05 | 12002024-02-01 | 12002024-02-01 |
| Highest weighted rating | 1282.32025-11-01 | 1279.62025-09-30 | 12002018-10-01 | 12002018-10-01 |
| Highest weighted performance | 1354.62025-05-05 | 1349.82024-07-01 | 12002024-02-01 | 12002024-02-01 |
| Prediction | ||||
|---|---|---|---|---|
| Item | Main | Standard | Rapid | Blitz |
| Rating change | 1.4 | -0.6 | 0 | 0 |
| New rating | 1283.7 | 1278.5 | 1200 | 1200 |
| Analysis | ||||
| Rating | 1282.3 | 1279 | 1200 | 1200 |
| Raw rating | 1280.8 | 1256.3 | 1200 | 1200 |
| Weighted rating | 1282.3 | 1279 | 1200 | |
| Weighted performance | 1208.6 | 1195 | 0 | |
| K-factor | 36 | 36 | 36 | 36 |
| Floor | 854.6 | 849.8 | 700 | 700 |
| Max/Min rating change allowed | 147.8 | 153 | 165.8 | 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 | 1280.8 | 1256.3 | 1200 | 1200 |
| New weighted rating | 1283.7 | 1278.5 | 1200 | 1200 |
| New weighted performance | 1201.4 | 1187.9 | 0 | 0 |
| Temp new rating | 1283.7 | 1278.5 | 1200 | 1200 |
| Temp new rating +/- | 1.4 | -0.6 | 0 | 0 |
| Final new rating +/- | 1.4 | -0.6 | 0 | 0 |
| New rating | 1283.7 | 1278.5 | 1200 | 1200 |
| New K-factor | 36 | 36 | 36 | 36 |
| New floor | 854.6 | 849.8 | 700 | 700 |
| Item | Main | Standard | Rapid | Blitz |
|---|---|---|---|---|
| 0 | 0 | 0 | 0 | |
| 34 | 34 | 0 | 0 | |
| 49 | 49 | 0 | 0 | |
| 19 | 19 | 0 | 0 | |
| 0 | 0 | 0 | 0 | |
| 0 | 0 | 0 | 0 | |
| History | 106 | 106 | 0 | 0 |
| Games since | |||||||||||||||||
| Main83 | Standard83 | Rapid0 | Blitz0 | ||||||||||||||
| Gender | Male | ||||||||||||||||
| Age group | U18 | ||||||||||||||||
| Region | West Rand (GWR) | ||||||||||||||||
| Province | Gauteng (GT) | ||||||||||||||||
| Main | RSA | Province | Region | ||||||||||||||
| Overall | 3432 | 1150 | 97 | ||||||||||||||
| Male | 2662 | 887 | 72 | ||||||||||||||
| U18 | 519 | 185 | 19 | ||||||||||||||
| U18 Male | 425 | 149 | 16 | ||||||||||||||
| Standard | RSA | Province | Region | ||||||||||||||
| Overall | 3384 | 1220 | 116 | ||||||||||||||
| Male | 2630 | 951 | 89 | ||||||||||||||
| U18 | 540 | 203 | 23 | ||||||||||||||
| U18 Male | 444 | 166 | 19 | ||||||||||||||
| Rapid | RSA | Province | Region | ||||||||||||||
| Overall | -1 | -1 | -1 | ||||||||||||||
| Male | -1 | -1 | -1 | ||||||||||||||
| U18 | -1 | -1 | -1 | ||||||||||||||
| U18 Male | -1 | -1 | -1 | ||||||||||||||
| Blitz | RSA | Province | Region | ||||||||||||||
| Overall | -1 | -1 | -1 | ||||||||||||||
| Male | -1 | -1 | -1 | ||||||||||||||
| U18 | -1 | -1 | -1 | ||||||||||||||
| U18 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 | 34 | 16 | 47.06 | -25 | 1345.3 | 1320.3 |
| Standard | 34 | 16 | 47.06 | -25 | 1345.3 | 1320.3 |
| Rapid | 0 | 0 | 0 | 0 | 0 | 0 |
| Blitz | 0 | 0 | 0 | 0 | 0 | 0 |
| History | ||||||
| Games | Score | % | Dp | AvgOpp | Performance | |
| Main | 106 | 48 | 45.28 | -40.1 | 1304.2 | 1264.1 |
| Standard | 106 | 48 | 45.28 | -40.1 | 1304.2 | 1264.1 |
| Rapid | 0 | 0 | 0 | 0 | 0 | 0 |
| Blitz | 0 | 0 | 0 | 0 | 0 | 0 |
| Date | Main | Standard | Rapid | Blitz |
| 2025-11-01 | 1280.8 | 1256.3 | 1200 | 1200 |
| 2025-09-30 | 1326.5 | 1319.3 | 1200 | 1200 |
| 2025-09-01 | 1336 | 1330.4 | 1200 | 1200 |
| 2025-08-01 | 1319.5 | 1309.7 | 1200 | 1200 |
| 2025-07-01 | 1343.6 | 1337.6 | 1200 | 1200 |
| 2025-06-01 | 1343.6 | 1337.6 | 1200 | 1200 |
| 2025-05-01 | 1354.6 | 1349.8 | 1200 | 1200 |
| 2025-04-01 | 1296.5 | 1296.7 | 1200 | 1200 |
| 2025-03-01 | 1242.3 | 1244.4 | 1200 | 1200 |
| 2025-02-01 | 1242.3 | 1244.4 | 1200 | 1200 |
| 2025-01-01 | 1242.3 | 1244.4 | 1200 | 1200 |
| 2024-12-01 | 1224 | 1227.8 | 1200 | 1200 |
| 2024-11-01 | 1224 | 1227.8 | 1200 | 1200 |
| 2024-10-01 | 1218.3 | 1218.4 | 1200 | 1200 |
| 2024-09-01 | 1212.3 | 1210.1 | 1200 | 1200 |
| 2024-08-01 | 1235.9 | 1241.1 | 1200 | 1200 |
| 2024-07-01 | 1231.7 | 1237.5 | 1200 | 1200 |
| 2024-09-01 | 1236.5 | 1243.3 | 1200 | 1200 |
| 2024-05-01 | 1237.1 | 1243.3 | 1200 | 1200 |
| 2024-04-01 | 1220.1 | 1224.9 | 1200 | 1200 |
| 2024-03-01 | 1224.6 | 1229.9 | 1200 | 1200 |
| 2024-02-01 | 1224.6 | 1229.9 | 1200 | 1200 |
| 2024-01-01 | 1249.3 | 1258.7 | 1200 | 1200 |
| 2023-12-01 | 1249.3 | 1258.7 | 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 | 2025 Gauteng Top Schools Teams (U17) | 2025-08-30 | 2025-08-30 | Standard | Tshwane (GTP) | 5 | 5 | 3 | Yes | Analysis |
| 2 | West Rand Closed 2025 (U18) | 2025-10-18 | 2025-10-18 | Standard | West Rand (GWR) | 5 | 4 | 0 | Yes | Analysis |
| 3 | West Rand Trials 2025 (U18) | 2025-09-06 | 2025-09-06 | Standard | West Rand (GWR) | 5 | 5 | 2 | Yes | Analysis |
| 4 | West Rand Women's Day Open 2025 (Rooks) | 2025-08-09 | 2025-08-09 | Standard | West Rand (GWR) | 5 | 5 | 3 | Yes | Analysis |
| 5 | 2025 D2 Schools League Finals (U17) | 2025-07-26 | 2025-07-26 | Standard | West Rand (GWR) | 5 | 3 | 1 | Yes | Analysis |
| 6 | 2025 D2 Schools Individuals (U18 Open) | 2025-05-10 | 2025-05-10 | Standard | West Rand (GWR) | 5 | 3 | 1 | Yes | Analysis |
| 7 | FIDE in The West 2025 (Rooks) | 2025-04-12 | 2025-04-12 | Standard | West Rand (GWR) | 5 | 5 | 3 | Yes | Analysis |
| 8 | West Rand Juniors 2025 (U18) | 2025-03-08 | 2025-03-08 | Standard | West Rand (GWR) | 5 | 4 | 3 | Yes | Analysis |
Last 500 tournaments since 01 January 2018
| # | Tournament | Start | End | Type | Host | Rounds | Games | Score | Cfr | Analysis |
|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 2025 Gauteng Top Schools Teams (U17) | 2025-08-30 | 2025-08-30 | Standard | Tshwane (GTP) | 5 | 5 | 3 | Yes | Analysis |
| 2 | West Rand Closed 2025 (U18) | 2025-10-18 | 2025-10-18 | Standard | West Rand (GWR) | 5 | 4 | 0 | Yes | Analysis |
| 3 | West Rand Trials 2025 (U18) | 2025-09-06 | 2025-09-06 | Standard | West Rand (GWR) | 5 | 5 | 2 | Yes | Analysis |
| 4 | West Rand Women's Day Open 2025 (Rooks) | 2025-08-09 | 2025-08-09 | Standard | West Rand (GWR) | 5 | 5 | 3 | Yes | Analysis |
| 5 | 2025 D2 Schools League Finals (U17) | 2025-07-26 | 2025-07-26 | Standard | West Rand (GWR) | 5 | 3 | 1 | Yes | Analysis |
| 6 | 2025 D2 Schools Individuals (U18 Open) | 2025-05-10 | 2025-05-10 | Standard | West Rand (GWR) | 5 | 3 | 1 | Yes | Analysis |
| 7 | FIDE in The West 2025 (Rooks) | 2025-04-12 | 2025-04-12 | Standard | West Rand (GWR) | 5 | 5 | 3 | Yes | Analysis |
| 8 | West Rand Juniors 2025 (U18) | 2025-03-08 | 2025-03-08 | Standard | West Rand (GWR) | 5 | 4 | 3 | Yes | Analysis |
| 9 | Gauteng Inter-Region at UJ 2024 (U18 Candidates) | 2024-12-07 | 2024-12-08 | Standard | Johannesburg Metro (GJM) | 5 | 5 | 3 | Yes | Analysis |
| 10 | 2024 West Rand Closed (U18) | 2024-10-12 | 2024-10-12 | Standard | West Rand (GWR) | 5 | 5 | 2 | Yes | Analysis |
| 11 | 2024 West Rand Trials (U18) | 2024-09-07 | 2024-09-07 | Standard | West Rand (GWR) | 5 | 5 | 2 | Yes | Analysis |
| 12 | 2024 West Rand Rappies Open (Rooks) | 2024-08-03 | 2024-08-03 | Standard | West Rand (GWR) | 5 | 5 | 1 | Yes | Analysis |
| 13 | D2 School League Finals 2024 (U17) | 2024-07-20 | 2024-07-20 | Standard | West Rand (GWR) | 5 | 4 | 2 | Yes | Analysis |
| 14 | FIDE in the West 2024 (Rooks) | 2024-06-08 | 2024-06-08 | Standard | West Rand (GWR) | 5 | 5 | 2 | Yes | Analysis |
| 15 | 2024 D2 Schools Individuals (U18 Boys) | 2024-05-04 | 2024-05-04 | Standard | West Rand (GWR) | 5 | 5 | 2 | Yes | Analysis |
| 16 | 2024 West Rand RHS Open (Rooks) | 2024-04-13 | 2024-04-13 | Standard | West Rand (GWR) | 5 | 5 | 2.5 | Yes | Analysis |
| 17 | 2024 West Rand Juniors (U18) | 2024-03-09 | 2024-03-09 | Standard | West Rand (GWR) | 5 | 5 | 2 | Yes | Analysis |
| 18 | 2024 Gauteng Inter-Region Chess Championship (U16A) | 2024-01-13 | 2024-01-14 | Standard | Tshwane (GTP) | 5 | 5 | 1 | Yes | Analysis |
| 19 | 2023 West Rand Trials (U16) | 2023-09-09 | 2023-09-09 | Standard | West Rand (GWR) | 5 | 5 | 3 | Yes | Analysis |
| 20 | 2023 West Rand RHS Open (Bishops) | 2023-06-10 | 2023-06-10 | Standard | West Rand (GWR) | 5 | 5 | 3 | Yes | Analysis |
| 21 | West Rand Juniors 2023 (U16) | 2023-03-18 | 2023-03-18 | Standard | West Rand (GWR) | 5 | 4 | 2 | Yes | Analysis |
| 22 | WR Tournament and Coaching 2023 (Rooks) | 2023-02-25 | 2023-02-25 | Standard | West Rand (GWR) | 5 | 5 | 3 | Yes | Analysis |
| 23 | D2 Schools Individuals 2019 (U11) | 2019-05-18 | 2019-05-18 | Standard | West Rand (GWR) | 5 | 4 | 1.5 | Yes | Analysis |
Top 3 Streaks
| # | Games | Start | End | ||||||
|---|---|---|---|---|---|---|---|---|---|
| 1 | 3 | Tournament2025 Gauteng Top Schools Teams | TournamentWest Rand Trials 2025 | ||||||
| date2025-08-30 | rnd4 | typeStandard | result1 | date2025-09-06 | rnd1 | typeStandard | result1 | ||
| OpponentAtam, J (Joel) | OpponentMojaki, T (Tshegofatso) | ||||||||
| 2 | 3 | Tournament2025 D2 Schools League Finals | TournamentWest Rand Women's Day Open 2025 | ||||||
| date2025-07-26 | rnd5 | typeStandard | result1 | date2025-08-09 | rnd2 | typeStandard | result1 | ||
| OpponentNwankwo, O (Obina) | OpponentShai, K (Koketso) | ||||||||
| 3 | 3 | TournamentWest Rand Juniors 2025 | TournamentWest Rand Juniors 2025 | ||||||
| date2025-03-08 | rnd3 | typeStandard | result1 | date2025-03-08 | rnd5 | typeStandard | result1 | ||
| OpponentAckerman, J (Joshua) | OpponentPretorius, X (Xhiann) | ||||||||
| # | Games | Start | End | ||||||
|---|---|---|---|---|---|---|---|---|---|
| 1 | 3 | Tournament2025 D2 Schools League Finals | TournamentWest Rand Women's Day Open 2025 | ||||||
| date2025-07-26 | rnd5 | typeStandard | result1 | date2025-08-09 | rnd2 | typeStandard | result1 | ||
| OpponentNwankwo, O (Obina) | OpponentShai, K (Koketso) | ||||||||
| 2 | 3 | TournamentWest Rand Juniors 2025 | TournamentWest Rand Juniors 2025 | ||||||
| date2025-03-08 | rnd3 | typeStandard | result1 | date2025-03-08 | rnd5 | typeStandard | result1 | ||
| OpponentAckerman, J (Joshua) | OpponentPretorius, X (Xhiann) | ||||||||
| 3 | 3 | Tournament2024 West Rand Closed | TournamentGauteng Inter-Region at UJ 2024 | ||||||
| date2024-10-12 | rnd5 | typeStandard | result1 | date2024-12-07 | rnd2 | typeStandard | result1 | ||
| OpponentMoraka, L (Lesego) | OpponentDe Jager, J (Jandre) | ||||||||
| # | Games | Start | End | ||||||
|---|---|---|---|---|---|---|---|---|---|
| # | Games | Start | End | ||||||
|---|---|---|---|---|---|---|---|---|---|
| # | Games | Start | End | ||||||
|---|---|---|---|---|---|---|---|---|---|
| 1 | 3 | Tournament2025 D2 Schools League Finals | TournamentWest Rand Women's Day Open 2025 | ||||||
| date2025-07-26 | rnd5 | typeStandard | result1 | date2025-08-09 | rnd2 | typeStandard | result1 | ||
| OpponentNwankwo, O (Obina) | OpponentShai, K (Koketso) | ||||||||
| 2 | 3 | TournamentWest Rand Juniors 2025 | TournamentWest Rand Juniors 2025 | ||||||
| date2025-03-08 | rnd3 | typeStandard | result1 | date2025-03-08 | rnd5 | typeStandard | result1 | ||
| OpponentAckerman, J (Joshua) | OpponentPretorius, X (Xhiann) | ||||||||
| 3 | 3 | Tournament2024 West Rand Closed | TournamentGauteng Inter-Region at UJ 2024 | ||||||
| date2024-10-12 | rnd5 | typeStandard | result1 | date2024-12-07 | rnd2 | typeStandard | result1 | ||
| OpponentMoraka, L (Lesego) | OpponentDe Jager, J (Jandre) | ||||||||
| # | Games | Start | End | ||||||
|---|---|---|---|---|---|---|---|---|---|
| 1 | 3 | Tournament2025 D2 Schools League Finals | TournamentWest Rand Women's Day Open 2025 | ||||||
| date2025-07-26 | rnd5 | typeStandard | result1 | date2025-08-09 | rnd2 | typeStandard | result1 | ||
| OpponentNwankwo, O (Obina) | OpponentShai, K (Koketso) | ||||||||
| 2 | 3 | TournamentWest Rand Juniors 2025 | TournamentWest Rand Juniors 2025 | ||||||
| date2025-03-08 | rnd3 | typeStandard | result1 | date2025-03-08 | rnd5 | typeStandard | result1 | ||
| OpponentAckerman, J (Joshua) | OpponentPretorius, X (Xhiann) | ||||||||
| 3 | 3 | Tournament2024 West Rand Closed | TournamentGauteng Inter-Region at UJ 2024 | ||||||
| date2024-10-12 | rnd5 | typeStandard | result1 | date2024-12-07 | rnd2 | typeStandard | result1 | ||
| OpponentMoraka, L (Lesego) | OpponentDe Jager, J (Jandre) | ||||||||
| # | Games | Start | End | ||||||
|---|---|---|---|---|---|---|---|---|---|
| # | 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 | Moraka ,L (Lesego) | 4 | 2 | 0 | 4 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1222.2 | 1222.2 | 1223.7 | 1222.2 | 0 | 0 | 0 | 0 | ||||||
| 2 | Perry-Fisher ,IE (Iain Eric) | 3 | 0 | -425 | 3 | 0 | -425 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1422.5 | 997.5 | 1424.7 | 997.5 | 0 | 0 | 0 | 0 | ||||||
| 3 | Pillay ,L (Leeyah) | 3 | 1 | -141.7 | 3 | 1 | -141.7 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1319.1 | 1177.5 | 1313.7 | 1177.5 | 0 | 0 | 0 | 0 | ||||||
| 4 | Ilunga ,G (Gradi) | 2 | 0 | -425 | 2 | 0 | -425 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1515.1 | 1090.1 | 1524.3 | 1090.1 | 0 | 0 | 0 | 0 | ||||||
| 5 | Ackerman ,J (Joshua) | 2 | 2 | 425 | 2 | 2 | 425 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1257.6 | 1682.6 | 1262.4 | 1682.6 | 0 | 0 | 0 | 0 | ||||||
| 6 | Maoto ,O (Omphile) | 2 | 1 | 0 | 2 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1230.6 | 1230.6 | 1233.8 | 1230.6 | 0 | 0 | 0 | 0 | ||||||
| 7 | Fritz ,W (Wayde) | 2 | 2 | 425 | 2 | 2 | 425 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1219.3 | 1644.3 | 1220.6 | 1644.3 | 0 | 0 | 0 | 0 | ||||||
| 8 | Pauwels ,P (Piper) | 2 | 1 | 0 | 2 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1175.9 | 1175.9 | 1178.4 | 1175.9 | 0 | 0 | 0 | 0 | ||||||
| 9 | Udodi ,E (Edubechukwu) | 2 | 0 | -425 | 2 | 0 | -425 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1433.4 | 1008.4 | 1416.6 | 1008.4 | 0 | 0 | 0 | 0 | ||||||
| 10 | Moultrey ,V (Valentino) | 2 | 0 | -425 | 2 | 0 | -425 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1433.8 | 1008.8 | 1466.3 | 1008.8 | 0 | 0 | 0 | 0 | ||||||
Norms
| # | Norm | Tournament | Start | End | Rounds | Games | Score | Details |
|---|---|---|---|---|---|---|---|---|