PLAYER PAGE
Jonathan Arlow
1080113577West Rand (GWR)Personal
Main rating
| Rating | 1252.7 |
| K-factor | 36 |
| Floor | 854.6 |
| Highest | 1354.6 (2025-05-05) |
| Min/Max +/- allowed | 133 |
| Rating Change () | |
| Games | 4 |
| Score | 0.5 |
| We | 1.26 |
| SWe | -0.63 |
| Temp +/- | -22.8 |
| Penalties | 0 |
| Weight perform | 1140.1 |
| Final +/- | -22.8 |
| New Rating () | |
| Rating | 1229.8 |
| K-factor | 36 |
| Floor | 854.6 |
| Highest | 1354.6 (2025-05-05) |
| Min/Max +/- allowed | 133 |
Standard rating
| Rating | 1241.9 |
| K-factor | 36 |
| Floor | 849.8 |
| Highest | 1349.8 (2025-05-05) |
| Min/Max +/- allowed | 134 |
| Rating Change () | |
| Games | 4 |
| Score | 0.5 |
| We | 1.21 |
| SWe | -0.71 |
| Temp +/- | -25.5 |
| Penalties | 0 |
| Weight perform | 1140.1 |
| Final +/- | -25.5 |
| New Rating () | |
| Rating | 1216.4 |
| K-factor | 36 |
| Floor | 849.8 |
| Highest | 1349.8 (2025-05-05) |
| Min/Max +/- allowed | 134 |
Rapid rating
| Rating | 1200 |
| K-factor | 36 |
| Floor | 700 |
| Highest | 1200 (2018-10-01) |
| Min/Max +/- allowed | 165.8 |
| Rating Change () | |
| Games | 0 |
| Score | 0 |
| We | 0 |
| SWe | 0 |
| Temp +/- | 0 |
| Penalties | 0 |
| Weight perform | 0 |
| Final +/- | 0 |
| New Rating () | |
| Rating | 1200 |
| K-factor | 36 |
| Floor | 700 |
| Highest | 1200 (2018-10-01) |
| Min/Max +/- allowed | 165.8 |
Blitz rating
| Rating | 1200 |
| K-factor | 36 |
| Floor | 700 |
| Highest | 1200 (2018-10-01) |
| Min/Max +/- allowed | 165.8 |
| Rating Change () | |
| Games | 0 |
| Score | 0 |
| We | 0 |
| SWe | 0 |
| Temp +/- | 0 |
| Penalties | 0 |
| Weight perform | 0 |
| Final +/- | 0 |
| New Rating () | |
| Rating | 1200 |
| K-factor | 36 |
| Floor | 700 |
| Highest | 1200 (2018-10-01) |
| Min/Max +/- allowed | 165.8 |
Rating Graph
Tournaments
| # | Tournament | Type | Start | End | Host | Rounds | Rating | Games | Score | Perform | Rat+/- | Details |
| 1 | Gauteng Closed Chess Championships 2026 (U20 Open) | Standard | 2026-10-17 | 2026-10-17 | Ekurhuleni (GE) | 5 | 1252.7 | 4 | 0.5 | 1091.9 | -22.8 | Details |
| # | Tournament | Type | Start | End | Host | Rounds | Rating | Games | Score | Perform | Rat+/- | Details |
| 1 | West Rand Trials 2026 (U20) | Standard | 2026-09-05 | 2026-09-05 | West Rand (GWR) | 5 | 1262 | 4 | 1 | 1197 | -9.4 | Details |
| 2 | 2026 D2 Schools League Finals (U19) | Standard | 2026-08-15 | 2026-08-15 | West Rand (GWR) | 5 | 1262 | 4 | 1.5 | 1112 | -23.4 | Details |
| 3 | 2026 D2 Schools Individuals (U18 Boys) | Standard | 2026-05-15 | 2026-05-16 | West Rand (GWR) | 5 | 1260.5 | 5 | 2 | 1196.3 | -10.1 | Details |
| 4 | West Rand goes to Monnas 2026 (Rooks) | Standard | 2026-05-02 | 2026-05-02 | West Rand (GWR) | 5 | 1260.5 | 5 | 3 | 1453.7 | 35 | Details |
| 5 | FIDE in the West 2026 (Rooks) | Standard | 2026-04-11 | 2026-04-11 | West Rand (GWR) | 5 | 1307.7 | 5 | 1 | 1032.1 | -47.1 | Details |
| 6 | West Rand Open 2026 (Rooks) | Standard | 2026-02-07 | 2026-02-07 | West Rand (GWR) | 5 | 1286.1 | 5 | 3 | 1447.8 | 10 | Details |
| 7 | Gauteng Inter-Region at Emerald Resort 2025 (U18 Championship) | Standard | 2025-12-06 | 2025-12-07 | Sedibeng (GSV) | 5 | 1283.7 | 4 | 2 | 1280.5 | -0.2 | Details |
| 8 | 2025 Gauteng Top Schools Teams (U17) | Standard | 2025-08-30 | 2025-08-30 | Tshwane (GTP) | 5 | 1342.2 | 5 | 3 | 1386.1 | 3.7 | Details |
| 9 | West Rand Closed 2025 (U18) | Standard | 2025-10-18 | 2025-10-18 | West Rand (GWR) | 5 | 1342.2 | 4 | 0 | 970.5 | -29 | Details |
| 10 | West Rand Trials 2025 (U18) | Standard | 2025-09-06 | 2025-09-06 | West Rand (GWR) | 5 | 1354 | 5 | 2 | 1307.6 | -5.3 | Details |
| 11 | West Rand Women's Day Open 2025 (Rooks) | Standard | 2025-08-09 | 2025-08-09 | West Rand (GWR) | 5 | 1319.5 | 5 | 3 | 1421 | 9.1 | Details |
| 12 | 2025 D2 Schools League Finals (U17) | Standard | 2025-07-26 | 2025-07-26 | West Rand (GWR) | 5 | 1343.6 | 3 | 1 | 1126.1 | -13.4 | Details |
| 13 | 2025 D2 Schools Individuals (U18 Open) | Standard | 2025-05-10 | 2025-05-10 | West Rand (GWR) | 5 | 1354.6 | 3 | 1 | 1262.6 | -6.1 | Details |
| 14 | FIDE in The West 2025 (Rooks) | Standard | 2025-04-12 | 2025-04-12 | West Rand (GWR) | 5 | 1296.5 | 5 | 3 | 1441.1 | 13.4 | Details |
| 15 | West Rand Juniors 2025 (U18) | Standard | 2025-03-08 | 2025-03-08 | West Rand (GWR) | 5 | 1242.3 | 4 | 3 | 1515.5 | 21.2 | Details |
| 16 | Gauteng Inter-Region at UJ 2024 (U18 Candidates) | Standard | 2024-12-07 | 2024-12-08 | Johannesburg Metro (GJM) | 5 | 1224 | 5 | 3 | 1320.2 | 10.1 | Details |
| 17 | 2024 West Rand Closed (U18) | Standard | 2024-10-12 | 2024-10-12 | West Rand (GWR) | 5 | 1218.3 | 5 | 2 | 1244.5 | 3.2 | Details |
| 18 | 2024 West Rand Trials (U18) | Standard | 2024-09-07 | 2024-09-07 | West Rand (GWR) | 5 | 1212.3 | 5 | 2 | 1257.5 | 3.3 | Details |
| 19 | 2024 West Rand Rappies Open (Rooks) | Standard | 2024-08-03 | 2024-08-03 | West Rand (GWR) | 5 | 1235.9 | 5 | 1 | 1095.5 | -13.1 | Details |
| 20 | D2 School League Finals 2024 (U17) | Standard | 2024-07-20 | 2024-07-20 | West Rand (GWR) | 5 | 1231.7 | 4 | 2 | 1262 | 2.3 | Details |
| 21 | FIDE in the West 2024 (Rooks) | Standard | 2024-06-08 | 2024-06-08 | West Rand (GWR) | 5 | 1236.5 | 5 | 2 | 1218.3 | -2.7 | Details |
| 22 | 2024 D2 Schools Individuals (U18 Boys) | Standard | 2024-05-04 | 2024-05-04 | West Rand (GWR) | 5 | 1237.1 | 5 | 2 | 1242 | -0.3 | Details |
| 23 | 2024 West Rand RHS Open (Rooks) | Standard | 2024-04-13 | 2024-04-13 | West Rand (GWR) | 5 | 1220.1 | 5 | 2.5 | 1309.7 | 9.5 | Details |
| 24 | 2024 West Rand Juniors (U18) | Standard | 2024-03-09 | 2024-03-09 | West Rand (GWR) | 5 | 1224.6 | 5 | 2 | 1208.4 | -2.5 | Details |
| 25 | 2024 Gauteng Inter-Region Chess Championship (U16A) | Standard | 2024-01-13 | 2024-01-14 | Tshwane (GTP) | 5 | 1249.3 | 5 | 1 | 1133.9 | -13.7 | Details |
| 26 | 2023 West Rand Trials (U16) | Standard | 2023-09-09 | 2023-09-09 | West Rand (GWR) | 5 | 1223.3 | 5 | 3 | 1364.8 | 14.4 | Details |
| 27 | 2023 West Rand RHS Open (Bishops) | Standard | 2023-06-10 | 2023-06-10 | West Rand (GWR) | 5 | 1204.2 | 5 | 3 | 1305.6 | 10.6 | Details |
| 28 | West Rand Juniors 2023 (U16) | Standard | 2023-03-18 | 2023-03-18 | West Rand (GWR) | 5 | 1200 | 4 | 2 | 1229.3 | 2.3 | Details |
| 29 | WR Tournament and Coaching 2023 (Rooks) | Standard | 2023-02-25 | 2023-02-25 | West Rand (GWR) | 5 | 1175.1 | 5 | 3 | 1296.5 | 12.4 | Details |
| 30 | D2 Schools Individuals 2019 (U11) | Standard | 2019-05-18 | 2019-05-18 | West Rand (GWR) | 5 | 1200 | 4 | 1.5 | 1040 | -12.4 | Details |
Game statistics ( )
| Games | 4 |
| Wins | 0 |
| Draws | 1 |
| Losses | 3 |
| White | 2 |
| Black | 2 |
| White wins | 0 |
| Black wins | 0 |
| Score | 0.5 |
| Percent | 12.5 |
| Dp | -318.8 |
| AOR | 1410.7 |
| Performance | 1091.9 |
Game statistics ()
| Games | 32 |
| Wins | 10 |
| Draws | 4 |
| Losses | 18 |
| White | 15 |
| Black | 17 |
| White wins | 5 |
| Black wins | 5 |
| Score | 12 |
| Percent | 37.5 |
| Dp | -106.2 |
| AOR | 1332.9 |
| Performance | 1226.6 |
Game statistics (History)
| Games | 142 |
| Wins | 59 |
| Draws | 6 |
| Losses | 77 |
| White | 73 |
| Black | 69 |
| White wins | 31 |
| Black wins | 28 |
| Score | 62 |
| Percent | 43.7 |
| Dp | -53.9 |
| AOR | 1310 |
| Performance | 1256.2 |
Rankings (Main)
| National | |
| Overall | 8339 |
| Gender | 6712 |
| Age group | 918 |
| Gender/Age | 772 |
| Provincial | |
| Overall | 2890 |
| Gender | 2308 |
| Age group | 318 |
| Gender/Age | 268 |
| Regional | |
| Overall | 246 |
| Gender | 192 |
| Age group | 37 |
| Gender/Age | 32 |
Rankings (Standard)
| National | |
| Overall | 7607 |
| Gender | 6002 |
| Age group | 809 |
| Gender/Age | 676 |
| Provincial | |
| Overall | 2737 |
| Gender | 2140 |
| Age group | 267 |
| Gender/Age | 222 |
| Regional | |
| Overall | 271 |
| Gender | 214 |
| Age group | 35 |
| Gender/Age | 31 |
Rankings (Rapid)
| National | |
| Overall | -1 |
| Gender | -1 |
| Age group | -1 |
| Gender/Age | -1 |
| Provincial | |
| Overall | -1 |
| Gender | -1 |
| Age group | -1 |
| Gender/Age | -1 |
| Regional | |
| Overall | -1 |
| Gender | -1 |
| Age group | -1 |
| Gender/Age | -1 |
Rankings (Blitz)
| National | |
| Overall | -1 |
| Gender | -1 |
| Age group | -1 |
| Gender/Age | -1 |
| Provincial | |
| Overall | -1 |
| Gender | -1 |
| Age group | -1 |
| Gender/Age | -1 |
| Regional | |
| Overall | -1 |
| Gender | -1 |
| Age group | -1 |
| Gender/Age | -1 |
Performance ( )
| Games | 4 |
| Score | 0.5 |
| Percent | 12.5 |
| Aor | 1410.7 |
| Dp | -318.8 |
| Prat | 1091.9 |
Performance ()
| Games | 32 |
| Score | 12 |
| Percent | 37.5 |
| Aor | 1332.9 |
| Dp | -106.2 |
| Prat | 1226.6 |
Performance (12 months)
| Games | 36 |
| Score | 14 |
| Percent | 38.9 |
| Aor | 1327.1 |
| Dp | -94.4 |
| Prat | 1232.6 |
Performance (History)
| Games | 142 |
| Score | 62 |
| Percent | 43.7 |
| Aor | 1310 |
| Dp | -53.9 |
| Prat | 1256.2 |
Top 5 opponents most often played
| Type | # | Opponent | Games | White | Black | First tournament | Last tournament | Details |
| Overall | 1 | Moraka, L (Lesego) | 4 | 2 | 2 | 2024 West Rand Juniors (U18) | West Rand Trials 2025 (U18) | Details |
| Overall | 2 | Mbasane, D (David) | 3 | 3 | 0 | West Rand Juniors 2023 (U16) | FIDE in the West 2026 (Rooks) | Details |
| Overall | 3 | Perry-Fisher, IE (Iain Eric) | 3 | 1 | 2 | 2024 West Rand Rappies Open (Rooks) | West Rand Trials 2025 (U18) | Details |
| Overall | 4 | Pillay, L (Leeyah) | 3 | 2 | 1 | 2024 West Rand Rappies Open (Rooks) | West Rand Closed 2025 (U18) | Details |
| Overall | 5 | Ilunga, G (Gradi) | 3 | 2 | 1 | 2024 D2 Schools Individuals (U18 Boys) | 2026 D2 Schools League Finals (U19) | Details |
| Standard | 1 | Moraka, L (Lesego) | 4 | 2 | 2 | 2024 West Rand Juniors (U18) | West Rand Trials 2025 (U18) | Details |
| Standard | 2 | Mbasane, D (David) | 3 | 3 | 0 | West Rand Juniors 2023 (U16) | FIDE in the West 2026 (Rooks) | Details |
| Standard | 3 | Perry-Fisher, IE (Iain Eric) | 3 | 1 | 2 | 2024 West Rand Rappies Open (Rooks) | West Rand Trials 2025 (U18) | Details |
| Standard | 4 | Pillay, L (Leeyah) | 3 | 2 | 1 | 2024 West Rand Rappies Open (Rooks) | West Rand Closed 2025 (U18) | Details |
| Standard | 5 | Ilunga, G (Gradi) | 3 | 2 | 1 | 2024 D2 Schools Individuals (U18 Boys) | 2026 D2 Schools League Finals (U19) | Details |