PLAYER PAGE
Joel Jacobs
1150146349Nelson Mandela Bay (ENM)Personal
Main rating
| Rating | 1587.3 |
| K-factor | 32 |
| Floor | 1087.3 |
| Highest | 1587.3 (2026-04-01) |
| Min/Max +/- allowed | 95 |
| Rating Change () | |
| Games | 6 |
| Score | 4 |
| We | 3.98 |
| SWe | 0.01 |
| Temp +/- | 0.4 |
| Penalties | 0 |
| Weight perform | 1539.8 |
| Final +/- | +0.4 |
| New Rating () | |
| Rating | 1587.7 |
| K-factor | 32 |
| Floor | 1087.7 |
| Highest | 1587.7 (2026-07-01) |
| Min/Max +/- allowed | 95.4 |
Standard rating
| Rating | 1587.3 |
| K-factor | 32 |
| Floor | 1087.3 |
| Highest | 1587.3 (2026-04-01) |
| Min/Max +/- allowed | 95.5 |
| Rating Change () | |
| Games | 0 |
| Score | 0 |
| We | 0 |
| SWe | 0 |
| Temp +/- | 0 |
| Penalties | 0 |
| Weight perform | 1548.6 |
| Final +/- | 0 |
| New Rating () | |
| Rating | 1587.3 |
| K-factor | 32 |
| Floor | 1087.3 |
| Highest | 1587.3 (2026-04-01) |
| Min/Max +/- allowed | 95.5 |
Rapid rating
| Rating | 1284.2 |
| K-factor | 36 |
| Floor | 784.2 |
| Highest | 1437.1 (2024-11-01) |
| Min/Max +/- allowed | 118.3 |
| Rating Change () | |
| Games | 6 |
| Score | 4 |
| We | 3.09 |
| SWe | 0.91 |
| Temp +/- | 32.8 |
| Penalties | 0 |
| Weight perform | 0 |
| Final +/- | +32.8 |
| New Rating () | |
| Rating | 1317 |
| K-factor | 36 |
| Floor | 784.2 |
| Highest | 1437.1 (2024-11-01) |
| Min/Max +/- allowed | 118.3 |
Blitz rating
| Rating | 1102.4 |
| 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 | 1102.4 |
| 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 | Checkmate in Gqeberha 2026 (U12) | Rapid | 2026-07-11 | 2026-07-11 | Nelson Mandela Bay (ENM) | 6 | 1587.3 | 6 | 4 | 1588.9 | 0.4 | Details |
| # | Tournament | Type | Start | End | Host | Rounds | Rating | Games | Score | Perform | Rat+/- | Details |
| 1 | 2026 NMBCU Trials 4 (U12) | Standard | 2026-04-24 | 2026-04-25 | Nelson Mandela Bay (ENM) | 6 | 1513.3 | 5 | 3.5 | 1623.4 | 18.4 | Details |
| 2 | NMBCU Trials 3 2026 (U12) | Standard | 2026-04-18 | 2026-04-18 | Nelson Mandela Bay (ENM) | 5 | 1513.3 | 5 | 4 | 1670.4 | 25.8 | Details |
| 3 | 2026 NMBCU Trials 2 (U12) | Standard | 2026-03-06 | 2026-03-07 | Nelson Mandela Bay (ENM) | 6 | 1494.3 | 6 | 4 | 1564.6 | 13.3 | Details |
| 4 | 2025 Mzansi Individual Championships (U12 Open) | Classical | 2025-12-17 | 2025-12-20 | Nelson Mandela Bay (ENM) | 6 | 1456.7 | 6 | 3 | 1460.5 | 0.6 | Details |
| 5 | 2025 Mzansi Inter Provincial Team Championships (U12 Combined) | Standard | 2025-12-15 | 2025-12-17 | Nelson Mandela Bay (ENM) | 6 | 1456.7 | 6 | 4.5 | 1665.2 | 23.1 | Details |
| 6 | EC Closed 2025 (U12 Boys) | Standard | 2025-09-06 | 2025-09-07 | Nelson Mandela Bay (ENM) | 6 | 1494.3 | 6 | 3 | 1455.8 | -5.1 | Details |
| 7 | Eastern Cape Inter-Regional Individual Chess Championship 2025 (U12 Open) | Standard | 2025-07-11 | 2025-07-12 | Amathole (EAL) | 6 | 1407 | 6 | 5.5 | 1774.2 | 43 | Details |
| 8 | Eastern Cape Inter-Regional Team Chess Championship 2025 (U12) | Standard | 2025-07-10 | 2025-07-11 | Amathole (EAL) | 5 | 1407 | 3 | 1 | 1301.4 | -7 | Details |
| 9 | NMBCU Closed 2025 (U12) | Standard | 2025-06-13 | 2025-06-14 | Nelson Mandela Bay (ENM) | 6 | 1404.2 | 6 | 3 | 1419.7 | 1.8 | Details |
| 10 | NMBCU Open 2025 (C) | Standard | 2025-05-23 | 2025-05-24 | Nelson Mandela Bay (ENM) | 6 | 1396.4 | 0 | 0 | 0 | 0 | Details |
| 11 | NMBCU Trial 4 2025 (U12) | Standard | 2025-05-09 | 2025-05-10 | Nelson Mandela Bay (ENM) | 6 | 1396.4 | 6 | 3 | 1426.5 | 4.8 | Details |
| 12 | NMB 3rd Trials 2025 (U12) | Standard | 2025-04-11 | 2025-04-12 | Nelson Mandela Bay (ENM) | 6 | 1392.4 | 6 | 4 | 1448 | 5.3 | Details |
| 13 | South African Junior Closed Chess Championships 2025 (U10 Open) | Classical | 2025-03-31 | 2025-04-05 | Cape Winelands (WCW) | 9 | 1392.4 | 9 | 3.5 | 1376.3 | -2.8 | Details |
| 14 | NMB 2nd Trials 2025 (U12) | Standard | 2025-03-07 | 2025-03-08 | Nelson Mandela Bay (ENM) | 6 | 1427 | 5 | 2.5 | 1210.4 | -21.6 | Details |
| 15 | Pearson High Chess Festival 2025 (C) | Standard | 2025-02-21 | 2025-02-22 | Nelson Mandela Bay (ENM) | 5 | 1459.8 | 5 | 3 | 1322.5 | -13.9 | Details |
| 16 | NMBCH Trial 1 2025 (U12) | Standard | 2025-02-14 | 2025-02-15 | Nelson Mandela Bay (ENM) | 6 | 1459.8 | 6 | 4 | 1400.9 | -6.6 | Details |
| 17 | NMBCU vs BCC Derby Chess Invitational 2025 (U10) | Standard | 2025-01-10 | 2025-01-11 | Nelson Mandela Bay (ENM) | 5 | 1455.6 | 5 | 3 | 1488.4 | 2.6 | Details |
| 18 | Mzansi Interprovincial Youth Chess Championships 2024 (U10 Open Championship) | Classical | 2024-12-16 | 2024-12-19 | Capricorn (LCP) | 7 | 1417.8 | 7 | 5 | 1555.6 | 23.6 | Details |
| 19 | Grey Junior School Chess Team Championship 2024 (Junior) | Rapid | 2024-11-02 | 2024-11-02 | Nelson Mandela Bay (ENM) | 6 | 1419.5 | 6 | 4 | 1406.5 | -1.1 | Details |
| 20 | NMBCU Top Schools Final 2024 (Primary School) | Standard | 2024-10-19 | 2024-10-29 | Nelson Mandela Bay (ENM) | 3 | 1416.9 | 3 | 2 | 1359.8 | -4 | Details |
| 21 | NMBCU Top Schools 2024 (Senior Primary) | Rapid | 2024-10-12 | 2024-10-12 | Nelson Mandela Bay (ENM) | 5 | 1416.9 | 5 | 4 | 1473.1 | 5.6 | Details |
| 22 | NMBCU Closed 2024 (U10) | Standard | 2024-09-20 | 2024-09-21 | Nelson Mandela Bay (ENM) | 6 | 1420.2 | 6 | 4 | 1400.8 | -2 | Details |
| 23 | NMBCU Trial 5 2024 (U8+U10) | Standard | 2024-08-16 | 2024-08-17 | Nelson Mandela Bay (ENM) | 6 | 1402.7 | 6 | 4 | 1483.5 | 11 | Details |
| 24 | NMBCU Trials 4 2024 (U10) | Standard | 2024-07-12 | 2024-07-13 | Nelson Mandela Bay (ENM) | 6 | 1397.4 | 6 | 4 | 1410.8 | 1.7 | Details |
| 25 | NMBCU Trial 3 2024 (U10) | Standard | 2024-05-10 | 2024-05-11 | Nelson Mandela Bay (ENM) | 6 | 1413.3 | 6 | 3.5 | 1313.3 | -10 | Details |
| 26 | NMBCU Trials 2 2024 (U10) | Standard | 2024-04-12 | 2024-04-13 | Nelson Mandela Bay (ENM) | 6 | 1327.8 | 6 | 6 | 1660.9 | 39 | Details |
| 27 | Sams Easter Invitational 1 2024 | Standard | 2024-03-27 | 2024-03-27 | Nelson Mandela Bay (ENM) | 6 | 1341.2 | 6 | 3 | 1430.4 | 10.3 | Details |
| 28 | Chess Lovers Invitational March 2024 | Standard | 2024-03-20 | 2024-03-21 | Nelson Mandela Bay (ENM) | 7 | 1341.2 | 7 | 2 | 1207.6 | -17.8 | Details |
| 29 | NMBCU Trials 1 2024 (U10) | Standard | 2024-02-16 | 2024-02-17 | Nelson Mandela Bay (ENM) | 6 | 1322.1 | 6 | 5 | 1597.7 | 32.4 | Details |
| 30 | Pearson Open Chess Tournament 2024 (C) | Standard | 2024-02-23 | 2024-02-24 | Nelson Mandela Bay (ENM) | 5 | 1322.1 | 5 | 2 | 1107.4 | -21.6 | Details |
| 31 | Eastern Cape Provincial Individual Championship 2023 (U10 Boys) | Standard | 2023-10-05 | 2023-10-05 | Nelson Mandela Bay (ENM) | 7 | 1188.6 | 7 | 4 | 1369.2 | 24.6 | Details |
| 32 | Eastern Cape Chess Team Championship 2023 (U10) | Standard | 2023-10-07 | 2023-10-08 | Sarah Baartman (ESB) | 5 | 1188.6 | 3 | 3 | 1553.9 | 21.3 | Details |
| 33 | NMBCU Closed 2023 (U10) | Standard | 2023-08-11 | 2023-08-12 | Nelson Mandela Bay (ENM) | 6 | 1234.6 | 6 | 1.5 | 1015.9 | -25.6 | Details |
| 34 | NMBCU Trial 4 2023 (U10) | Standard | 2023-07-28 | 2023-07-29 | Nelson Mandela Bay (ENM) | 6 | 1197.5 | 6 | 4 | 1360 | 20.4 | Details |
| 35 | EP Trials 3 2023 (U10) | Standard | 2023-05-05 | 2023-05-06 | Nelson Mandela Bay (ENM) | 6 | 1202.6 | 6 | 3 | 1177.3 | -3 | Details |
| 36 | NMB 1st Trials 2023 (U8+U10) | Standard | 2023-02-17 | 2023-02-18 | Nelson Mandela Bay (ENM) | 6 | 1189 | 6 | 3.5 | 1248.2 | 7 | Details |
| 37 | PECC Blitz Closed 2022 | Blitz | 2022-08-11 | 2022-08-18 | Nelson Mandela Bay (ENM) | 9 | 1200 | 9 | 3 | 1049.8 | -5.6 | Details |
Game statistics ( )
| Games | 6 |
| Wins | 4 |
| Draws | 0 |
| Losses | 2 |
| White | 3 |
| Black | 3 |
| White wins | 2 |
| Black wins | 2 |
| Score | 4 |
| Percent | 66.7 |
| Dp | 141.7 |
| AOR | 1447.2 |
| Performance | 1588.8 |
Game statistics ()
| Games | 22 |
| Wins | 15 |
| Draws | 1 |
| Losses | 6 |
| White | 10 |
| Black | 12 |
| White wins | 7 |
| Black wins | 8 |
| Score | 15.5 |
| Percent | 70.5 |
| Dp | 173.9 |
| AOR | 1434.8 |
| Performance | 1608.6 |
Game statistics (History)
| Games | 215 |
| Wins | 121 |
| Draws | 16 |
| Losses | 78 |
| White | 106 |
| Black | 109 |
| White wins | 65 |
| Black wins | 56 |
| Score | 129 |
| Percent | 60 |
| Dp | 85 |
| AOR | 1325 |
| Performance | 1410 |
Rankings (Main)
| National | |
| Overall | 1165 |
| Gender | 1064 |
| Age group | 71 |
| Gender/Age | 64 |
| Provincial | |
| Overall | 115 |
| Gender | 109 |
| Age group | 7 |
| Gender/Age | 7 |
| Regional | |
| Overall | 55 |
| Gender | 51 |
| Age group | 6 |
| Gender/Age | 6 |
Rankings (Standard)
| National | |
| Overall | 1068 |
| Gender | 972 |
| Age group | 73 |
| Gender/Age | 65 |
| Provincial | |
| Overall | 110 |
| Gender | 104 |
| Age group | 9 |
| Gender/Age | 8 |
| Regional | |
| Overall | 48 |
| Gender | 45 |
| Age group | 6 |
| Gender/Age | 6 |
Rankings (Rapid)
| National | |
| Overall | 2403 |
| Gender | 1973 |
| Age group | 355 |
| Gender/Age | 281 |
| Provincial | |
| Overall | 198 |
| Gender | 166 |
| Age group | 30 |
| Gender/Age | 24 |
| Regional | |
| Overall | 56 |
| Gender | 51 |
| Age group | 8 |
| Gender/Age | 7 |
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 | 6 |
| Score | 4 |
| Percent | 66.7 |
| Aor | 1447.2 |
| Dp | 141.7 |
| Prat | 1588.8 |
Performance ()
| Games | 22 |
| Score | 15.5 |
| Percent | 70.5 |
| Aor | 1434.8 |
| Dp | 173.9 |
| Prat | 1608.6 |
Performance (12 months)
| Games | 40 |
| Score | 26 |
| Percent | 65 |
| Aor | 1444.5 |
| Dp | 127.5 |
| Prat | 1572 |
Performance (History)
| Games | 215 |
| Score | 129 |
| Percent | 60 |
| Aor | 1325 |
| Dp | 85 |
| Prat | 1410 |
Top 5 opponents most often played
| Type | # | Opponent | Games | White | Black | First tournament | Last tournament | Details |
| Overall | 1 | King, J (Jaymie) | 9 | 5 | 4 | NMBCU Trial 4 2023 (U10) | Grey Junior School Chess Team Championship 2024 (Junior) | Details |
| Overall | 2 | Stander, CL (Cael Lelethu) | 9 | 4 | 5 | NMBCU Trial 3 2024 (U10) | 2026 NMBCU Trials 4 (U12) | Details |
| Overall | 3 | Verwey, M (Malan) | 6 | 2 | 4 | NMBCU Trials 1 2024 (U10) | 2026 NMBCU Trials 2 (U12) | Details |
| Overall | 4 | Hugo, K (Kian) | 6 | 3 | 3 | NMBCU Trial 3 2024 (U10) | Eastern Cape Inter-Regional Individual Chess Championship 2025 (U12 Open) | Details |
| Overall | 5 | Boggenpoel, L (Levi) | 6 | 2 | 4 | NMB 1st Trials 2023 (U8+U10) | NMBCU Closed 2025 (U12) | Details |
| Standard | 1 | Stander, CL (Cael Lelethu) | 9 | 4 | 5 | NMBCU Trial 3 2024 (U10) | 2026 NMBCU Trials 4 (U12) | Details |
| Standard | 2 | King, J (Jaymie) | 7 | 4 | 3 | NMBCU Trial 4 2023 (U10) | NMBCU Closed 2024 (U10) | Details |
| Standard | 3 | Boggenpoel, L (Levi) | 6 | 2 | 4 | NMB 1st Trials 2023 (U8+U10) | NMBCU Closed 2025 (U12) | Details |
| Standard | 4 | Furniss, T (Tyler) | 6 | 1 | 5 | NMBCU Closed 2023 (U10) | 2025 Mzansi Individual Championships (U12 Open) | Details |
| Standard | 5 | Hugo, K (Kian) | 6 | 3 | 3 | NMBCU Trial 3 2024 (U10) | Eastern Cape Inter-Regional Individual Chess Championship 2025 (U12 Open) | Details |
| Rapid | 1 | King, J (Jaymie) | 2 | 1 | 1 | Grey Junior School Chess Team Championship 2024 (Junior) | Grey Junior School Chess Team Championship 2024 (Junior) | Details |
| Rapid | 2 | Fourie, A (Andre) | 2 | 1 | 1 | Grey Junior School Chess Team Championship 2024 (Junior) | Grey Junior School Chess Team Championship 2024 (Junior) | Details |
| Rapid | 3 | Van Dyk, B (Ben) | 2 | 1 | 1 | Grey Junior School Chess Team Championship 2024 (Junior) | Grey Junior School Chess Team Championship 2024 (Junior) | Details |