PLAYER PAGE
Derek Barnes
1150304358Tshwane (GTP)Personal
Main rating
| Rating | 1237.9 |
| K-factor | 36 |
| Floor | 764 |
| Highest | 1396.9 (2024-05-01) |
| Min/Max +/- allowed | 125 |
| Rating Change () | |
| Games | 0 |
| Score | 0 |
| We | 0 |
| SWe | 0 |
| Temp +/- | 0 |
| Penalties | 0 |
| Weight perform | 1233.4 |
| Final +/- | 0 |
| New Rating () | |
| Rating | 1237.9 |
| K-factor | 36 |
| Floor | 764 |
| Highest | 1396.9 (2024-05-01) |
| Min/Max +/- allowed | 125.3 |
Standard rating
| Rating | 1256.6 |
| K-factor | 36 |
| Floor | 779.3 |
| Highest | 1396 (2024-05-01) |
| Min/Max +/- allowed | 125.4 |
| Rating Change () | |
| Games | 0 |
| Score | 0 |
| We | 0 |
| SWe | 0 |
| Temp +/- | 0 |
| Penalties | 0 |
| Weight perform | 1233.4 |
| Final +/- | 0 |
| New Rating () | |
| Rating | 1256.6 |
| K-factor | 36 |
| Floor | 779.3 |
| Highest | 1396 (2024-05-01) |
| Min/Max +/- allowed | 125.4 |
Rapid rating
| Rating | 1200 |
| K-factor | 36 |
| Floor | 700 |
| Highest | 1200 (2024-06-01) |
| 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 (2024-06-01) |
| Min/Max +/- allowed | 165.8 |
Blitz rating
| Rating | 1200 |
| K-factor | 36 |
| Floor | 700 |
| Highest | 1200 (2024-06-01) |
| 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 (2024-06-01) |
| 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 | 2026 Constantiapark Open Chess Tournament (U12) | Standard | 2026-02-14 | 2026-02-14 | Tshwane (GTP) | 5 | 1224 | 5 | 3 | 1454.7 | 0 | Details |
| 2 | 2026 Tshwane Chess Registration Tournament (U12-1) | Standard | 2026-01-31 | 2026-01-31 | Tshwane (GTP) | 5 | 1224 | 5 | 1.5 | 1195.6 | 0 | Details |
| 3 | Gauteng Inter-Region at Emerald Resort 2025 (U12 Candidates) | Standard | 2025-12-06 | 2025-12-07 | Sedibeng (GSV) | 5 | 1292 | 4 | 0 | 919.3 | 0 | Details |
| 4 | Lardies Open 2025 (U12) | Standard | 2025-10-18 | 2025-10-18 | Tshwane (GTP) | 5 | 1219.8 | 5 | 2 | 1244.8 | 0 | Details |
| 5 | 2025 Gauteng Top Schools Teams (U11) | Standard | 2025-08-29 | 2025-08-29 | Tshwane (GTP) | 5 | 1219.8 | 5 | 4 | 1523.1 | 0 | Details |
| 6 | 2025 Gauteng North School District CLOSED League Finals - D1 (U11) | Standard | 2025-08-16 | 2025-08-16 | Tshwane (GTP) | 5 | 1236.2 | 5 | 3.5 | 1437.5 | 0 | Details |
| 7 | 2025 Etienne Lewis Closed Chess Tournament (U12) | Standard | 2025-08-08 | 2025-08-10 | Tshwane (GTP) | 7 | 1236.2 | 7 | 1 | 1012.9 | 0 | Details |
| 8 | 2025 Menlo Open (U12) | Standard | 2025-07-26 | 2025-07-26 | Tshwane (GTP) | 5 | 1219.4 | 5 | 2.5 | 1309.2 | 0 | Details |
| 9 | 2025 Gauteng North School Individual Championships D1 (U11 Open) | Standard | 2025-05-17 | 2025-05-17 | Tshwane (GTP) | 5 | 1218.3 | 4 | 2 | 1196.7 | 0 | Details |
| 10 | Lubowski Open 2025 (D2) | Standard | 2025-03-21 | 2025-03-22 | Tshwane (GTP) | 5 | 1214.1 | 4 | 0 | 877.8 | 0 | Details |
| 11 | Constantiapark Open 2025 (U12) | Standard | 2025-02-15 | 2025-02-15 | Tshwane (GTP) | 5 | 1212.8 | 4 | 0 | 863.9 | 0 | Details |
| 12 | 2025 Tshwane Chess OPEN Registration Tournament (U12) | Standard | 2025-01-25 | 2025-01-25 | Tshwane (GTP) | 5 | 1194 | 5 | 0.5 | 942.7 | 0 | Details |
| 13 | Lardies Ope 2024 (U10) | Standard | 2024-10-26 | 2024-10-26 | Tshwane (GTP) | 5 | 1246.6 | 4 | 0.5 | 872.1 | 0 | Details |
| 14 | Gauteng Top Schools 2024 (U9 Open) | Standard | 2024-10-04 | 2024-10-04 | Ekurhuleni (GE) | 5 | 1261.2 | 5 | 2 | 1184.8 | 0 | Details |
| 15 | D1 Gauteng North District School Closed 2024 (U9) | Standard | 2024-08-03 | 2024-08-03 | Tshwane (GTP) | 5 | 1238.8 | 5 | 3.5 | 1359.8 | 0 | Details |
| 16 | 2024 Gauteng North School District Individual Championships - D1 (U9 Boys) | Standard | 2024-05-11 | 2024-05-11 | Tshwane (GTP) | 5 | 1200 | 5 | 3.5 | 1392.1 | 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 | 10 |
| Wins | 4 |
| Draws | 1 |
| Losses | 5 |
| White | 5 |
| Black | 5 |
| White wins | 3 |
| Black wins | 1 |
| Score | 4.5 |
| Percent | 45 |
| Dp | -42.5 |
| AOR | 1367.6 |
| Performance | 1325.1 |
Game statistics (History)
| Games | 77 |
| Wins | 24 |
| Draws | 11 |
| Losses | 42 |
| White | 39 |
| Black | 38 |
| White wins | 12 |
| Black wins | 12 |
| Score | 29.5 |
| Percent | 38.3 |
| Dp | -99.4 |
| AOR | 1284.2 |
| Performance | 1184.8 |
Rankings (Main)
| National | |
| Overall | 9193 |
| Gender | 7409 |
| Age group | 981 |
| Gender/Age | 767 |
| Provincial | |
| Overall | 3112 |
| Gender | 2493 |
| Age group | 333 |
| Gender/Age | 266 |
| Regional | |
| Overall | 996 |
| Gender | 808 |
| Age group | 111 |
| Gender/Age | 90 |
Rankings (Standard)
| National | |
| Overall | 6940 |
| Gender | 5601 |
| Age group | 726 |
| Gender/Age | 567 |
| Provincial | |
| Overall | 2512 |
| Gender | 2015 |
| Age group | 268 |
| Gender/Age | 214 |
| Regional | |
| Overall | 878 |
| Gender | 712 |
| Age group | 97 |
| Gender/Age | 79 |
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 | 10 |
| Score | 4.5 |
| Percent | 45 |
| Aor | 1367.6 |
| Dp | -42.5 |
| Prat | 1325.1 |
Performance (12 months)
| Games | 49 |
| Score | 19.5 |
| Percent | 39.8 |
| Aor | 1309 |
| Dp | -86.7 |
| Prat | 1222.2 |
Performance (History)
| Games | 77 |
| Score | 29.5 |
| Percent | 38.3 |
| Aor | 1284.2 |
| Dp | -99.4 |
| Prat | 1184.8 |
Top 5 opponents most often played
| Type | # | Opponent | Games | White | Black | First tournament | Last tournament | Details |
| Overall | 1 | Venter, D (Daniel) | 3 | 2 | 1 | Lardies Ope 2024 (U10) | 2026 Constantiapark Open Chess Tournament (U12) | Details |
| Overall | 2 | Motumi, T (Tsepe) | 3 | 2 | 1 | D1 Gauteng North District School Closed 2024 (U9) | 2025 Gauteng North School District CLOSED League Finals - D1 (U11) | Details |
| Overall | 3 | Kgwale, O (Obotegile) | 2 | 2 | 0 | 2025 Tshwane Chess OPEN Registration Tournament (U12) | 2025 Etienne Lewis Closed Chess Tournament (U12) | Details |
| Overall | 4 | Bettesworth, J (Joshua) | 2 | 0 | 2 | 2025 Menlo Open (U12) | Lardies Open 2025 (U12) | Details |
| Overall | 5 | Mendonca, N (Nelita) | 2 | 1 | 1 | Constantiapark Open 2025 (U12) | Lardies Open 2025 (U12) | Details |
| Standard | 1 | Venter, D (Daniel) | 3 | 2 | 1 | Lardies Ope 2024 (U10) | 2026 Constantiapark Open Chess Tournament (U12) | Details |
| Standard | 2 | Motumi, T (Tsepe) | 3 | 2 | 1 | D1 Gauteng North District School Closed 2024 (U9) | 2025 Gauteng North School District CLOSED League Finals - D1 (U11) | Details |
| Standard | 3 | Kgwale, O (Obotegile) | 2 | 2 | 0 | 2025 Tshwane Chess OPEN Registration Tournament (U12) | 2025 Etienne Lewis Closed Chess Tournament (U12) | Details |
| Standard | 4 | Bettesworth, J (Joshua) | 2 | 0 | 2 | 2025 Menlo Open (U12) | Lardies Open 2025 (U12) | Details |
| Standard | 5 | Mendonca, N (Nelita) | 2 | 1 | 1 | Constantiapark Open 2025 (U12) | Lardies Open 2025 (U12) | Details |