PLAYER PAGE
Sarah Williamson
2090108393Cape Town (WCT)Personal
Main rating
| Rating | 1250.8 |
| K-factor | 36 |
| Floor | 750.8 |
| Highest | 1260.9 (2023-09-01) |
| Min/Max +/- allowed | 152 |
| Rating Change () | |
| Games | 0 |
| Score | 0 |
| We | 0 |
| SWe | 0 |
| Temp +/- | 0 |
| Penalties | 0 |
| Weight perform | 1123.6 |
| Final +/- | 0 |
| New Rating () | |
| Rating | 1250.8 |
| K-factor | 36 |
| Floor | 750.8 |
| Highest | 1260.9 (2023-09-01) |
| Min/Max +/- allowed | 152 |
Standard rating
| Rating | 1243.3 |
| K-factor | 36 |
| Floor | 743.3 |
| Highest | 1243.3 (2025-09-30) |
| Min/Max +/- allowed | 155.9 |
| Rating Change () | |
| Games | 0 |
| Score | 0 |
| We | 0 |
| SWe | 0 |
| Temp +/- | 0 |
| Penalties | 0 |
| Weight perform | 1123.6 |
| Final +/- | 0 |
| New Rating () | |
| Rating | 1243.3 |
| K-factor | 36 |
| Floor | 743.3 |
| Highest | 1243.3 (2025-09-30) |
| Min/Max +/- allowed | 155.9 |
Rapid rating
| Rating | 1217.4 |
| K-factor | 36 |
| Floor | 717.4 |
| Highest | 1220 (2022-03-01) |
| Min/Max +/- allowed | 161.2 |
| Rating Change () | |
| Games | 0 |
| Score | 0 |
| We | 0 |
| SWe | 0 |
| Temp +/- | 0 |
| Penalties | 0 |
| Weight perform | 0 |
| Final +/- | 0 |
| New Rating () | |
| Rating | 1217.4 |
| K-factor | 36 |
| Floor | 717.4 |
| Highest | 1220 (2022-03-01) |
| Min/Max +/- allowed | 161.2 |
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 | Western Cape Schools - Top Schools 2025 (U19 Girls) | Standard | 2025-09-06 | 2025-09-07 | Overberg (WOS) | 6 | 1215.5 | 4 | 3 | 1465.8 | 0 | Details |
| 2 | Western Cape Top Schools Championship 2024 (U15 Girls) | Standard | 2024-08-30 | 2024-09-01 | Eden (WEG) | 6 | 1182.3 | 6 | 4 | 1339.3 | 0 | Details |
| 3 | Western Cape HS Individuals Championship 2024 (U15 Girls) | Standard | 2024-03-21 | 2024-03-22 | Overberg (WOS) | 6 | 1222.8 | 6 | 1 | 1002.8 | 0 | Details |
| 4 | Cape Town Metro Schools Chess Closed Individuals 2024 (U15 Girls) | Standard | 2024-03-02 | 2024-03-03 | Cape Town (WCT) | 6 | 1222.8 | 6 | 3 | 1265.4 | 0 | Details |
| 5 | CT Metro Central District Schools Chess Individuals Trials 2024 (U15 Girls) | Standard | 2024-02-03 | 2024-02-03 | Cape Town (WCT) | 5 | 1243.7 | 5 | 2.5 | 1130.9 | 0 | Details |
| 6 | Western Cape Top Schools 2023 (U15 Girls) | Standard | 2023-09-02 | 2023-09-03 | Cape Winelands (WCW) | 5 | 1138.4 | 5 | 4.5 | 1593.4 | 0 | Details |
| 7 | Western Cape HS Individuals 2023 (U15 Girls) | Standard | 2023-04-01 | 2023-04-02 | Cape Town (WCT) | 6 | 1139.1 | 6 | 2 | 1138.5 | 0 | Details |
| 8 | Cape Town Metro Schools Chess Closed Individuals 2023 (U15 Girls) | Standard | 2023-02-03 | 2023-03-04 | Cape Town (WCT) | 6 | 1120.8 | 6 | 3 | 1200.6 | 0 | Details |
| 9 | Central District School Trials 2023 (U15 Girls) | Standard | 2023-02-03 | 2023-02-04 | Cape Town (WCT) | 6 | 1110.2 | 5 | 2.5 | 1158.4 | 0 | Details |
| 10 | Metro Rapid 2022 (U13 Girls) | Rapid | 2022-10-22 | 2022-10-22 | Cape Town (WCT) | 5 | 1079.5 | 5 | 3 | 1291.8 | 0 | Details |
| 11 | WP Closed 2022 (U14) | Standard | 2022-06-16 | 2022-06-16 | Cape Town (WCT) | 6 | 1068 | 6 | 2.5 | 1114.7 | 0 | Details |
| 12 | Western Cape Schools 2022 (U13 Girls) | Standard | 2022-05-28 | 2022-05-29 | Cape Winelands (WCW) | 6 | 1095.5 | 6 | 1 | 981.3 | 0 | Details |
| 13 | Metro WP Schools Chess Trials 2022 (U13 Girls) | Standard | 2022-04-22 | 2022-04-23 | Cape Town (WCT) | 6 | 1086.5 | 6 | 2.5 | 1127 | 0 | Details |
| 14 | 2022 Central District Individual Trials (U13) | Rapid | 2022-03-05 | 2022-03-05 | Cape Town (WCT) | 5 | 1055.1 | 5 | 3 | 1272.1 | 0 | Details |
| 15 | Laerskool Welgemoed 12th Annual Chess Challenge 2022 (U14) | Rapid | 2022-02-19 | 2022-02-19 | Cape Town (WCT) | 5 | 1042.1 | 5 | 2 | 1143.4 | 0 | Details |
| 16 | 2020 Central District (U11) | Standard | 2020-02-07 | 2020-02-08 | Cape Town (WCT) | 6 | 1033.4 | 6 | 3 | 1193.1 | 0 | Details |
| 17 | 2020 Cape Of Good Hope Open (Open) | Standard | 2020-02-21 | 2020-02-23 | Cape Town (WCT) | 6 | 1033.4 | 6 | 1 | 921.4 | 0 | Details |
| 18 | Western Cape Top Schools 2019 (U13 Girls) | Standard | 2019-08-31 | 2019-09-01 | Cape Winelands (WCW) | 5 | 1024.4 | 2 | 1 | 1179.1 | 0 | Details |
| 19 | Metro School Chess Closed Individual Trials 2019 (U11 Girls) | Standard | 2019-03-01 | 2019-03-02 | Cape Town (WCT) | 6 | 1108.7 | 5 | 0 | 668.4 | 0 | Details |
| 20 | 2019 Central District Schools Trials (U11) | Standard | 2019-02-01 | 2019-02-02 | Cape Town (WCT) | 6 | 1200 | 5 | 0.5 | 683.7 | 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 | 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 (History)
| Games | 106 |
| Wins | 40 |
| Draws | 10 |
| Losses | 56 |
| White | 53 |
| Black | 53 |
| White wins | 22 |
| Black wins | 18 |
| Score | 45 |
| Percent | 42.5 |
| Dp | -64.2 |
| AOR | 1202.2 |
| Performance | 1138.1 |
Rankings (Main)
| National | |
| Overall | 8338 |
| Gender | 1565 |
| Age group | 1334 |
| Gender/Age | 269 |
| Provincial | |
| Overall | 2405 |
| Gender | 542 |
| Age group | 356 |
| Gender/Age | 97 |
| Regional | |
| Overall | 1064 |
| Gender | 186 |
| Age group | 133 |
| Gender/Age | 31 |
Rankings (Standard)
| National | |
| Overall | 7536 |
| Gender | 1503 |
| Age group | 1267 |
| Gender/Age | 269 |
| Provincial | |
| Overall | 2106 |
| Gender | 519 |
| Age group | 323 |
| Gender/Age | 90 |
| Regional | |
| Overall | 946 |
| Gender | 187 |
| Age group | 124 |
| Gender/Age | 32 |
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 | 0 |
| Score | 0 |
| Percent | 0 |
| Aor | 0 |
| Dp | 0 |
| Prat | 0 |
Performance (12 months)
| Games | 4 |
| Score | 3 |
| Percent | 75 |
| Aor | 1253.3 |
| Dp | 212.5 |
| Prat | 1465.8 |
Performance (History)
| Games | 106 |
| Score | 45 |
| Percent | 42.5 |
| Aor | 1202.2 |
| Dp | -64.2 |
| Prat | 1138.1 |
Top 5 opponents most often played
| Type | # | Opponent | Games | White | Black | First tournament | Last tournament | Details |
| Overall | 1 | Phetheni, A (Axolisiwe) | 3 | 0 | 3 | Metro School Chess Closed Individual Trials 2019 (U11 Girls) | WP Closed 2022 (U14) | Details |
| Overall | 2 | Mqadi, O (Olethiwe) | 3 | 0 | 3 | Metro School Chess Closed Individual Trials 2019 (U11 Girls) | CT Metro Central District Schools Chess Individuals Trials 2024 (U15 Girls) | Details |
| Overall | 3 | Hastig, A (Amamkele) | 2 | 1 | 1 | Metro WP Schools Chess Trials 2022 (U13 Girls) | WP Closed 2022 (U14) | Details |
| Overall | 4 | Mokhele, Z (Zimi) | 2 | 1 | 1 | Metro Rapid 2022 (U13 Girls) | CT Metro Central District Schools Chess Individuals Trials 2024 (U15 Girls) | Details |
| Overall | 5 | Bellini, G (Gemma) | 2 | 2 | 0 | WP Closed 2022 (U14) | Metro Rapid 2022 (U13 Girls) | Details |
| Standard | 1 | Phetheni, A (Axolisiwe) | 3 | 0 | 3 | Metro School Chess Closed Individual Trials 2019 (U11 Girls) | WP Closed 2022 (U14) | Details |
| Standard | 2 | Mqadi, O (Olethiwe) | 3 | 0 | 3 | Metro School Chess Closed Individual Trials 2019 (U11 Girls) | CT Metro Central District Schools Chess Individuals Trials 2024 (U15 Girls) | Details |
| Standard | 3 | Orwin, J (Jennifer) | 2 | 2 | 0 | Metro WP Schools Chess Trials 2022 (U13 Girls) | Cape Town Metro Schools Chess Closed Individuals 2024 (U15 Girls) | Details |
| Standard | 4 | Hart-Davis, K (Katherine) | 2 | 0 | 2 | 2019 Central District Schools Trials (U11) | Central District School Trials 2023 (U15 Girls) | Details |
| Standard | 5 | Kondlo, H (Hlomla) | 2 | 2 | 0 | Cape Town Metro Schools Chess Closed Individuals 2024 (U15 Girls) | Western Cape HS Individuals Championship 2024 (U15 Girls) | Details |