PLAYER PAGE
Sebastian Vermaak
1160153041Ekurhuleni (GE)Personal
Main rating
| Rating | 1368.1 |
| K-factor | 36 |
| Floor | 898 |
| Highest | 1398 (2025-06-01) |
| Min/Max +/- allowed | 125 |
| Rating Change () | |
| Games | 0 |
| Score | 0 |
| We | 0 |
| SWe | 0 |
| Temp +/- | 0 |
| Penalties | 0 |
| Weight perform | 1314.4 |
| Final +/- | 0 |
| New Rating () | |
| Rating | 1368.1 |
| K-factor | 36 |
| Floor | 898 |
| Highest | 1398 (2025-06-01) |
| Min/Max +/- allowed | 125.1 |
Standard rating
| Rating | 1354.4 |
| K-factor | 36 |
| Floor | 875.8 |
| Highest | 1375.8 (2026-07-01) |
| Min/Max +/- allowed | 129.1 |
| Rating Change () | |
| Games | 0 |
| Score | 0 |
| We | 0 |
| SWe | 0 |
| Temp +/- | 0 |
| Penalties | 0 |
| Weight perform | 1314.4 |
| Final +/- | 0 |
| New Rating () | |
| Rating | 1354.4 |
| K-factor | 36 |
| Floor | 875.8 |
| Highest | 1375.8 (2026-07-01) |
| Min/Max +/- allowed | 129.1 |
Rapid rating
| Rating | 1215.9 |
| K-factor | 36 |
| Floor | 715.9 |
| Highest | 1215.9 (2025-05-05) |
| Min/Max +/- allowed | 162.1 |
| Rating Change () | |
| Games | 0 |
| Score | 0 |
| We | 0 |
| SWe | 0 |
| Temp +/- | 0 |
| Penalties | 0 |
| Weight perform | 0 |
| Final +/- | 0 |
| New Rating () | |
| Rating | 1215.9 |
| K-factor | 36 |
| Floor | 715.9 |
| Highest | 1215.9 (2025-05-05) |
| Min/Max +/- allowed | 162.1 |
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 | Ekurhuleni 3rd Trials 2026 (F) | Standard | 2026-07-25 | 2026-07-25 | Ekurhuleni (GE) | 5 | 1368.1 | 5 | 2.5 | 1275.5 | -18 | Details |
| 2 | Ekurhuleni Open 2026 (E) | Standard | 2026-05-23 | 2026-05-23 | Ekurhuleni (GE) | 5 | 1334.8 | 5 | 3.5 | 1620.7 | 51.3 | Details |
| 3 | Ekurhuleni 1st Trial 2026 (D U12) | Standard | 2026-04-11 | 2026-04-11 | Ekurhuleni (GE) | 5 | 1336.2 | 5 | 3 | 1334.4 | -1.4 | Details |
| 4 | Gauteng Inter-Region at Emerald Resort 2025 (U12 Candidates) | Standard | 2025-12-06 | 2025-12-07 | Sedibeng (GSV) | 5 | 1374.5 | 5 | 2 | 1186 | -21.4 | Details |
| 5 | Ekurhuleni Trials 2025 (G) | Standard | 2025-07-26 | 2025-07-26 | Ekurhuleni (GE) | 5 | 1398 | 5 | 2 | 1270.6 | -13.1 | Details |
| 6 | Ekurhuleni Trials 2025 (G) | Standard | 2025-05-24 | 2025-05-24 | Ekurhuleni (GE) | 5 | 1290.1 | 5 | 4 | 1504.2 | 20.3 | Details |
| 7 | CPH May 2025 (D) | Standard | 2025-05-03 | 2025-05-03 | Johannesburg Metro (GJM) | 5 | 1290.1 | 5 | 3 | 1470.9 | 16.9 | Details |
| 8 | Chess Molecules Open Tournament 2025 (D) | Rapid | 2025-04-19 | 2025-04-19 | Johannesburg Metro (GJM) | 5 | 1266.1 | 5 | 3 | 1462 | 13.3 | Details |
| 9 | Gauteng Inter-Region at UJ 2024 (U10 Open) | Standard | 2024-12-07 | 2024-12-08 | Johannesburg Metro (GJM) | 5 | 1251.2 | 5 | 2 | 1333 | 8.3 | Details |
| 10 | Ekurhuleni Closed 2024 (U8+U10) | Standard | 2024-09-21 | 2024-09-21 | Ekurhuleni (GE) | 5 | 1300.2 | 5 | 2 | 1130.8 | -15.8 | Details |
| 11 | Mzansi Spring Open 2024 (Intermediate) | Standard | 2024-09-07 | 2024-09-07 | Johannesburg Metro (GJM) | 5 | 1300.2 | 4 | 1 | 1155 | -11.5 | Details |
| 12 | Ekurhuleni Trails 3 2024 (U8+U10) | Standard | 2024-08-24 | 2024-08-24 | Ekurhuleni (GE) | 5 | 1300.2 | 0 | 0 | 0 | 0 | Details |
| 13 | Ekurhuleni Trails 2 2024 (U8+U10) | Standard | 2024-07-27 | 2024-07-27 | Ekurhuleni (GE) | 5 | 1269.2 | 5 | 3 | 1412.2 | 14.6 | Details |
| 14 | 2024 Mid Gauteng Open Chess Tournament (U10) | Standard | 2024-05-02 | 2024-05-02 | Tshwane (GTP) | 5 | 1270.7 | 5 | 3 | 1267.9 | -0.8 | Details |
| 15 | Ekurhuleni Open 2024 (E) | Standard | 2024-04-06 | 2024-04-06 | Ekurhuleni (GE) | 5 | 1257.6 | 5 | 3 | 1326.7 | 7.3 | Details |
| 16 | 2024 Gauteng Inter-Region Chess Championship (U8) | Standard | 2024-01-13 | 2024-01-14 | Tshwane (GTP) | 5 | 1244.1 | 5 | 3 | 1321.7 | 7.5 | Details |
| 17 | Ekurhuleni Chess Spring Tournament 2023 (E) | Standard | 2023-09-23 | 2023-09-23 | Ekurhuleni (GE) | 5 | 1244.1 | 0 | 0 | 0 | 0 | Details |
| 18 | Ekurhuleni Trials 2 2023 (U8) | Standard | 2023-04-22 | 2023-04-22 | Ekurhuleni (GE) | 5 | 1181.4 | 5 | 4.5 | 1496.9 | 31.5 | Details |
| 19 | Ekhuruleni Chess Trials 1 2023 (U8+U10) | Standard | 2023-03-25 | 2023-03-25 | Ekurhuleni (GE) | 5 | 1200 | 5 | 2 | 1097.8 | -9.3 | 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 | 15 |
| Wins | 8 |
| Draws | 2 |
| Losses | 5 |
| White | 7 |
| Black | 8 |
| White wins | 4 |
| Black wins | 4 |
| Score | 9 |
| Percent | 60 |
| Dp | 85 |
| AOR | 1325.2 |
| Performance | 1410.2 |
Game statistics (History)
| Games | 84 |
| Wins | 45 |
| Draws | 3 |
| Losses | 36 |
| White | 43 |
| Black | 41 |
| White wins | 22 |
| Black wins | 23 |
| Score | 46.5 |
| Percent | 55.4 |
| Dp | 45.5 |
| AOR | 1289.9 |
| Performance | 1335.4 |
Rankings (Main)
| National | |
| Overall | 4270 |
| Gender | 3562 |
| Age group | 414 |
| Gender/Age | 320 |
| Provincial | |
| Overall | 1477 |
| Gender | 1237 |
| Age group | 145 |
| Gender/Age | 117 |
| Regional | |
| Overall | 257 |
| Gender | 202 |
| Age group | 19 |
| Gender/Age | 15 |
Rankings (Standard)
| National | |
| Overall | 4103 |
| Gender | 3383 |
| Age group | 416 |
| Gender/Age | 322 |
| Provincial | |
| Overall | 1466 |
| Gender | 1220 |
| Age group | 147 |
| Gender/Age | 121 |
| Regional | |
| Overall | 238 |
| Gender | 189 |
| Age group | 11 |
| Gender/Age | 10 |
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 | 15 |
| Score | 9 |
| Percent | 60 |
| Aor | 1325.2 |
| Dp | 85 |
| Prat | 1410.2 |
Performance (12 months)
| Games | 20 |
| Score | 11 |
| Percent | 55 |
| Aor | 1311.6 |
| Dp | 42.5 |
| Prat | 1354.1 |
Performance (History)
| Games | 84 |
| Score | 46.5 |
| Percent | 55.4 |
| Aor | 1289.9 |
| Dp | 45.5 |
| Prat | 1335.4 |
Top 5 opponents most often played
| Type | # | Opponent | Games | White | Black | First tournament | Last tournament | Details |
| Overall | 1 | Steyn, K (Kian) | 3 | 1 | 2 | Ekurhuleni Open 2024 (E) | Chess Molecules Open Tournament 2025 (D) | Details |
| Overall | 2 | Zhu, R (Ryan Yuancheng) | 3 | 2 | 1 | Ekhuruleni Chess Trials 1 2023 (U8+U10) | Gauteng Inter-Region at Emerald Resort 2025 (U12 Candidates) | Details |
| Overall | 3 | Mendonca, M (Mark) | 2 | 1 | 1 | Ekurhuleni Open 2024 (E) | Ekurhuleni Trials 2025 (G) | Details |
| Overall | 4 | Mafane, A (Atlegang) | 2 | 0 | 2 | Ekurhuleni Trials 2 2023 (U8) | Ekurhuleni Trials 2025 (G) | Details |
| Overall | 5 | Mogotlane, L (Lethabo) | 2 | 0 | 2 | Gauteng Inter-Region at Emerald Resort 2025 (U12 Candidates) | Ekurhuleni Open 2026 (E) | Details |
| Standard | 1 | Zhu, R (Ryan Yuancheng) | 3 | 2 | 1 | Ekhuruleni Chess Trials 1 2023 (U8+U10) | Gauteng Inter-Region at Emerald Resort 2025 (U12 Candidates) | Details |
| Standard | 2 | Mendonca, M (Mark) | 2 | 1 | 1 | Ekurhuleni Open 2024 (E) | Ekurhuleni Trials 2025 (G) | Details |
| Standard | 3 | Mafane, A (Atlegang) | 2 | 0 | 2 | Ekurhuleni Trials 2 2023 (U8) | Ekurhuleni Trials 2025 (G) | Details |
| Standard | 4 | Steyn, K (Kian) | 2 | 0 | 2 | Ekurhuleni Open 2024 (E) | Ekurhuleni Trails 2 2024 (U8+U10) | Details |
| Standard | 5 | Mogotlane, L (Lethabo) | 2 | 0 | 2 | Gauteng Inter-Region at Emerald Resort 2025 (U12 Candidates) | Ekurhuleni Open 2026 (E) | Details |