PLAYER PAGE
Abishai Korah Jacob
1090136702West Rand (GWR)Personal
Main rating
| Rating | 1287.7 |
| K-factor | 36 |
| Floor | 787.7 |
| Highest | 1302.4 (2023-05-01) |
| Min/Max +/- allowed | 143 |
| Rating Change () | |
| Games | 0 |
| Score | 0 |
| We | 0 |
| SWe | 0 |
| Temp +/- | 0 |
| Penalties | 0 |
| Weight perform | 1231.7 |
| Final +/- | 0 |
| New Rating () | |
| Rating | 1287.7 |
| K-factor | 36 |
| Floor | 787.7 |
| Highest | 1302.4 (2023-05-01) |
| Min/Max +/- allowed | 143.3 |
Standard rating
| Rating | 1295.5 |
| K-factor | 36 |
| Floor | 795.5 |
| Highest | 1300.8 (2023-05-01) |
| Min/Max +/- allowed | 143.6 |
| Rating Change () | |
| Games | 0 |
| Score | 0 |
| We | 0 |
| SWe | 0 |
| Temp +/- | 0 |
| Penalties | 0 |
| Weight perform | 1231.7 |
| Final +/- | 0 |
| New Rating () | |
| Rating | 1295.5 |
| K-factor | 36 |
| Floor | 795.5 |
| Highest | 1300.8 (2023-05-01) |
| Min/Max +/- allowed | 143.6 |
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 |
| # | Tournament | Type | Start | End | Host | Rounds | Rating | Games | Score | Perform | Rat+/- | Details |
| 1 | West Rand Open 2026 (Rooks) | Standard | 2026-02-07 | 2026-02-07 | West Rand (GWR) | 5 | 1254 | 5 | 3 | 1455.2 | 0 | Details |
| 2 | JCC Steyn City High Schools League 2025 (A) | Standard | 2025-05-07 | 2025-06-09 | Johannesburg Metro (GJM) | 6 | 1265.7 | 3 | 1 | 1166.8 | 0 | Details |
| 3 | 2025 D2 Schools Individuals (U18 Open) | Standard | 2025-05-10 | 2025-05-10 | West Rand (GWR) | 5 | 1233.4 | 5 | 3 | 1411.2 | 0 | Details |
| 4 | Gauteng Inter-Region at UJ 2024 (U16 Candidates) | Standard | 2024-12-07 | 2024-12-08 | Johannesburg Metro (GJM) | 5 | 1253.3 | 5 | 1 | 1085.6 | 0 | Details |
| 5 | 2024 West Rand Closed (U16) | Standard | 2024-10-12 | 2024-10-12 | West Rand (GWR) | 5 | 1262.9 | 5 | 2 | 1216.4 | 0 | Details |
| 6 | 2024 West Rand Trials (U16) | Standard | 2024-09-07 | 2024-09-07 | West Rand (GWR) | 5 | 1248 | 5 | 2.5 | 1325.3 | 0 | Details |
| 7 | D2 School League Finals 2024 (U19) | Standard | 2024-07-20 | 2024-07-20 | West Rand (GWR) | 5 | 1255.2 | 5 | 2 | 1207.3 | 0 | Details |
| 8 | 2024 D2 Schools Individuals (U15 Boys) | Standard | 2024-05-04 | 2024-05-04 | West Rand (GWR) | 5 | 1236.1 | 5 | 3 | 1337 | 0 | Details |
| 9 | 2024 West Rand RHS Open (Rooks) | Standard | 2024-04-13 | 2024-04-13 | West Rand (GWR) | 5 | 1222.7 | 5 | 2 | 1204.6 | 0 | Details |
| 10 | Dainfern College Chess League 2024 (A) | Standard | 2024-01-29 | 2024-03-11 | Johannesburg Metro (GJM) | 6 | 1222.7 | 6 | 3 | 1297.4 | 0 | Details |
| 11 | 1st Knights Open Tournament 2024 (C) | Standard | 2024-03-23 | 2024-03-23 | Johannesburg Metro (GJM) | 5 | 1188.3 | 5 | 2 | 1230 | 0 | Details |
| 12 | 2024 West Rand Juniors (U16) | Standard | 2024-03-09 | 2024-03-09 | West Rand (GWR) | 5 | 1188.3 | 5 | 3 | 1329.6 | 0 | Details |
| 13 | 2024 West Rand Open (Rooks) | Standard | 2024-02-03 | 2024-02-03 | West Rand (GWR) | 5 | 1192.2 | 5 | 2 | 1162.1 | 0 | Details |
| 14 | St Peters College Chess League 2023 (A) | Standard | 2023-09-11 | 2023-10-23 | Johannesburg Metro (GJM) | 6 | 1224.8 | 4 | 1 | 992.9 | 0 | Details |
| 15 | 2023 West Rand Trials (U16) | Standard | 2023-09-09 | 2023-09-09 | West Rand (GWR) | 5 | 1254.4 | 4 | 1 | 1041.9 | 0 | Details |
| 16 | D2 Schools Individuals 2023 (U15 Boys) | Standard | 2023-05-13 | 2023-05-13 | West Rand (GWR) | 5 | 1096.2 | 4 | 2 | 1232.2 | 0 | Details |
| 17 | Steyn City School Chess League 2023 (A) | Standard | 2023-05-05 | 2023-05-29 | Johannesburg Metro (GJM) | 6 | 1096.2 | 2 | 1 | 1152 | 0 | Details |
| 18 | Steyn City School Chess League 2023 (B) | Standard | 2023-05-05 | 2023-05-29 | Johannesburg Metro (GJM) | 6 | 1096.2 | 3 | 3 | 1624.2 | 0 | Details |
| 19 | West Rand Juniors 2023 (U16) | Standard | 2023-03-18 | 2023-03-18 | West Rand (GWR) | 5 | 1082.9 | 5 | 2 | 1143.6 | 0 | Details |
| 20 | West Rand Trials 2022 (U14) | Standard | 2022-09-03 | 2022-09-03 | West Rand (GWR) | 5 | 1138.3 | 4 | 0 | 784.5 | 0 | Details |
| 21 | 2nd West Rand Open 2022 (Juniors) | Standard | 2022-08-06 | 2022-08-06 | West Rand (GWR) | 5 | 1131.7 | 5 | 2 | 1159.3 | 0 | Details |
| 22 | D2 Schools Individuals 2022 (U13 Boys) | Standard | 2022-05-07 | 2022-05-07 | West Rand (GWR) | 5 | 1140.3 | 5 | 2 | 1103.4 | 0 | Details |
| 23 | West Rand Juniors 2022 (U14) | Standard | 2022-04-09 | 2022-04-09 | West Rand (GWR) | 5 | 1146.9 | 5 | 2 | 1120 | 0 | Details |
| 24 | West Rand Open 2022 (U14) | Standard | 2022-02-05 | 2022-02-05 | West Rand (GWR) | 5 | 1200 | 5 | 1 | 936 | 0 | Details |
Game statistics ( )
| Games | 0 |
| Wins | 0 |
| Draws | 0 |
| Losses | 0 |
| White | 0 |
| Black | 0 |
| White wins | 0 |
| Black wins | 0 |
| Score | 0 |
| Percent | 0 |
| Dp | 0 |
| AOR | 0 |
| Performance | 0 |
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 | 1370.2 |
| Performance | 1455.2 |
Game statistics (History)
| Games | 110 |
| Wins | 46 |
| Draws | 1 |
| Losses | 63 |
| White | 55 |
| Black | 55 |
| White wins | 23 |
| Black wins | 23 |
| Score | 46.5 |
| Percent | 42.3 |
| Dp | -65.7 |
| AOR | 1263.9 |
| Performance | 1198.2 |
Rankings (Main)
| National | |
| Overall | 6469 |
| Gender | 5332 |
| Age group | 1015 |
| Gender/Age | 821 |
| Provincial | |
| Overall | 2187 |
| Gender | 1805 |
| Age group | 382 |
| Gender/Age | 317 |
| Regional | |
| Overall | 184 |
| Gender | 145 |
| Age group | 29 |
| Gender/Age | 24 |
Rankings (Standard)
| National | |
| Overall | 5488 |
| Gender | 4492 |
| Age group | 901 |
| Gender/Age | 731 |
| Provincial | |
| Overall | 1974 |
| Gender | 1618 |
| Age group | 363 |
| Gender/Age | 298 |
| Regional | |
| Overall | 180 |
| Gender | 141 |
| Age group | 28 |
| Gender/Age | 23 |
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 | 0 |
| Score | 0 |
| Percent | 0 |
| Aor | 0 |
| Dp | 0 |
| Prat | 0 |
Performance ()
| Games | 5 |
| Score | 3 |
| Percent | 60 |
| Aor | 1370.2 |
| Dp | 85 |
| Prat | 1455.2 |
Performance (12 months)
| Games | 13 |
| Score | 7 |
| Percent | 53.8 |
| Aor | 1339 |
| Dp | 32.7 |
| Prat | 1371.7 |
Performance (History)
| Games | 110 |
| Score | 46.5 |
| Percent | 42.3 |
| Aor | 1263.9 |
| Dp | -65.7 |
| Prat | 1198.2 |
Top 5 opponents most often played
| Type | # | Opponent | Games | White | Black | First tournament | Last tournament | Details |
| Overall | 1 | Udodi, E (Edubechukwu) | 3 | 2 | 1 | 2024 West Rand Trials (U16) | 2025 D2 Schools Individuals (U18 Open) | Details |
| Overall | 2 | Badenhorst, JJ (Junaid Jaydon) | 2 | 1 | 1 | 2024 West Rand RHS Open (Rooks) | 2025 D2 Schools Individuals (U18 Open) | Details |
| Overall | 3 | Klaas, O (Oyintanda) | 2 | 1 | 1 | West Rand Juniors 2023 (U16) | 2023 West Rand Trials (U16) | Details |
| Overall | 4 | Sibanda, M (Marlvin) | 2 | 1 | 1 | West Rand Trials 2022 (U14) | 2024 West Rand Closed (U16) | Details |
| Overall | 5 | Sardinha, K (Keanu) | 2 | 1 | 1 | West Rand Open 2022 (U14) | West Rand Juniors 2022 (U14) | Details |
| Standard | 1 | Udodi, E (Edubechukwu) | 3 | 2 | 1 | 2024 West Rand Trials (U16) | 2025 D2 Schools Individuals (U18 Open) | Details |
| Standard | 2 | Van Heerden, A (Alexander) | 2 | 1 | 1 | 2024 D2 Schools Individuals (U15 Boys) | Gauteng Inter-Region at UJ 2024 (U16 Candidates) | Details |
| Standard | 3 | Myburgh, J (Joshua) | 2 | 2 | 0 | Steyn City School Chess League 2023 (B) | St Peters College Chess League 2023 (A) | Details |
| Standard | 4 | Klaas, O (Oyintanda) | 2 | 1 | 1 | West Rand Juniors 2023 (U16) | 2023 West Rand Trials (U16) | Details |
| Standard | 5 | Sibanda, M (Marlvin) | 2 | 1 | 1 | West Rand Trials 2022 (U14) | 2024 West Rand Closed (U16) | Details |