Player Page

Van Rooyen, S (Sergio)
Dob: 2008/11/07 (U18)
Gender: Male
Chess SA id: 1080099747
FIDE id:
Region: West Coast (WCU)
Citizen: RSA
Title(s):
Last active: 2024/07/27 (49 days ago)
Ratings
Raw rating=Current rating, Weighted rating (WR)=Weighted average of current/new Raw rating + last 23 published Raw ratings), Weighted performance (WP)=Weighted average of last 5 tournaments
Current Raw rating1200.2
Current Weighted rating1228.0
Current Weighted performance1017.1
Current official/published rating (highest between Raw, WR and WP)1228.0
Current highest rating achieved1267.5
Current floor (min rating allowed)767.5
Current K-factor36
Games played this month0
Score (S)0.0
Expected score (We)0.00
Difference (S-We)0.00
Current Raw change (no limits, including tournament time weight)0.0
Current min/max change allowed (with limits)±165.8
Current Raw change used (final)0.0
Projected new Raw rating1200.2
Projected new Weighed rating1131.7
Projected new Weighted performance1017.1
Projected new final Raw rating (if new WP > new Raw)1200.2
Projected new highest rating1267.5
Projected new floor767.5
Projected new K-facor36
Projected new official/published rating (highest between new Raw, new WR and new WP)1200.2
Projected effective change (new Official - current Official)-27.8
Raw rating=Current rating, Weighted rating (WR)=Weighted average of current/new Raw rating + last 23 published Raw ratings), Weighted performance (WP)=Weighted average of last 5 tournaments
Current Raw rating1208.8
Current Weighted rating1196.3
Current Weighted performance1001.1
Current official/published rating (highest between Raw, WR and WP)1208.8
Current highest rating achieved1208.8
Current floor (min rating allowed)708.8
Current K-factor36
Games played this month0
Score (S)0.0
Expected score (We)0.00
Difference (S-We)0.00
Current Raw change (no limits, including tournament time weight)0.0
Current min/max change allowed (with limits)±163.7
Current Raw change used (final)0.0
Projected new Raw rating1208.8
Projected new Weighed rating1102.7
Projected new Weighted performance1001.1
Projected new final Raw rating (if new WP > new Raw)1208.8
Projected new highest rating1208.8
Projected new floor708.8
Projected new K-facor36
Projected new official/published rating (highest between new Raw, new WR and new WP)1208.8
Projected effective change (new Official - current Official)=0.0
s
Raw rating=Current rating, Weighted rating (WR)=Weighted average of current/new Raw rating + last 23 published Raw ratings), Weighted performance (WP)=Weighted average of last 5 tournaments
Current Raw rating1141.8
Current Weighted rating1184.6
Current Weighted performance1070.7
Current official/published rating (highest between Raw, WR and WP)1184.6
Current highest rating achieved1236.0
Current floor (min rating allowed)736.0
Current K-factor36
Games played this month0
Score (S)0.0
Expected score (We)0.00
Difference (S-We)0.00
Current Raw change (no limits, including tournament time weight)0.0
Current min/max change allowed (with limits)±180.2
Current Raw change used (final)0.0
Projected new Raw rating1141.8
Projected new Weighed rating1089.8
Projected new Weighted performance1070.7
Projected new final Raw rating (if new WP > new Raw)1141.8
Projected new highest rating1236.0
Projected new floor736.0
Projected new K-facor36
Projected new official/published rating (highest between new Raw, new WR and new WP)1141.8
Projected effective change (new Official - current Official)-42.8
Raw rating=Current rating, Weighted rating (WR)=Weighted average of current/new Raw rating + last 23 published Raw ratings), Weighted performance (WP)=Weighted average of last 5 tournaments
Current Raw rating1200.0
Current Weighted rating1200.0
Current Weighted performance
Current official/published rating (highest between Raw, WR and WP)1200.0
Current highest rating achieved1200.0
Current floor (min rating allowed)700.0
Current K-factor36
Games played this month0
Score (S)0.0
Expected score (We)0.00
Difference (S-We)0.00
Current Raw change (no limits, including tournament time weight)0.0
Current min/max change allowed (with limits)±165.8
Current Raw change used (final)0.0
Projected new Raw rating1200.0
Projected new Weighed rating1104.0
Projected new Weighted performance
Projected new final Raw rating (if new WP > new Raw)
Projected new highest rating1200.0
Projected new floor700.0
Projected new K-facor36
Projected new official/published rating (highest between new Raw, new WR and new WP)1200.0
Projected effective change (new Official - current Official)=0.0
Tournaments
Did not participate this month.
#TournamentStartEndHostTypeTimeWeightRnsGmsScrMainTypeAnalysis
5 Vredendal North CC Open 2024 (Elite) 2024/07/27 2024/07/27 West Coast (WCU) Rapid 28 0.58 5 5 1.0 1247.8 1211.3 Analysis
4 Pedro Booyse Annual Rapid 2024 (Open) 2024/07/06 2024/07/06 West Coast (WCU) Rapid 30 0.60 5 4 1.0 1247.8 1211.3 Analysis
3 Bo-Weskus Skole Skaak Top Skole 2024 (O18) 2024/05/11 2024/05/11 West Coast (WCU) Rapid 30 0.60 5 5 2.5 1246.5 1197.3 Analysis
2 West Coast Schools Chess Prestige Championships 2024 (U18+U20 Boys) 2024/02/24 2024/02/24 West Coast (WCU) Rapid 30 0.60 5 5 2.0 1267.5 1222.9 Analysis
1 Bo-Weskus Skole Prestige 2024 (O18 Seuns) 2024/02/10 2024/02/10 West Coast (WCU) Rapid 30 0.60 5 5 2.5 1267.5 1222.9 Analysis
#TournamentStartEndHostTypeTimeWeightRoundsGamesScoreMainTypeAnalysis
21 Vredendal North CC Open 2024 (Elite) 2024/07/27 2024/07/27 West Coast (WCU) Rapid 28 0.58 5 5 1.0 1247.8 1211.3 Analysis
20 Pedro Booyse Annual Rapid 2024 (Open) 2024/07/06 2024/07/06 West Coast (WCU) Rapid 30 0.60 5 4 1.0 1247.8 1211.3 Analysis
19 Bo-Weskus Skole Skaak Top Skole 2024 (O18) 2024/05/11 2024/05/11 West Coast (WCU) Rapid 30 0.60 5 5 2.5 1246.5 1197.3 Analysis
18 West Coast Schools Chess Prestige Championships 2024 (U18+U20 Boys) 2024/02/24 2024/02/24 West Coast (WCU) Rapid 30 0.60 5 5 2.0 1267.5 1222.9 Analysis
17 Bo-Weskus Skole Prestige 2024 (O18 Seuns) 2024/02/10 2024/02/10 West Coast (WCU) Rapid 30 0.60 5 5 2.5 1267.5 1222.9 Analysis
16 Clanwilliam Chess Club Open 2023 (B) 2023/12/02 2023/12/02 West Coast (WCU) Rapid 35 0.66 5 5 3.5 1242.3 1168.2 Analysis
15 Youth Day 2 2023 (Elite) 2023/06/24 2023/06/24 West Coast (WCU) Rapid 30 0.60 5 5 1.5 1141.8 1139.8 Analysis
14 Upper West Coast Top Schools Championship 2023 (High School) 2023/06/10 2023/06/10 West Coast (WCU) Rapid 30 0.60 5 5 3.0 1141.8 1139.8 Analysis
13 West Coast Open 2023 (Open) 2023/05/20 2023/06/03 West Coast (WCU) Standard 90 0.94 5 5 4.0 1141.8 1137.6 Analysis
12 PRBCC Closed 2023 (A) 2023/04/15 2023/04/15 West Coast (WCU) Rapid 35 0.66 6 6 2.0 1135.6 1172.2 Analysis
11 Western Cape HS Individuals 2023 (U15 Boys) 2023/04/01 2023/04/02 Cape Town (WCT) Standard 60 0.83 6 6 2.0 1135.6 1100.0 Analysis
10 West Coast High School Championships 2023 (U15 Boys) 2023/02/18 2023/02/18 West Coast (WCU) Standard 60 0.83 6 6 3.0 1112.1 1058.8 Analysis
9 Bo-Weskus Skole Prestige 2023 (O15 Seuns) 2023/02/11 2023/02/11 West Coast (WCU) Rapid 30 0.60 5 5 2.0 1112.1 1207.5 Analysis
8 Pedro Booyse Top Schools 2022 (U15 Open) 2022/07/23 2022/07/23 West Coast (WCU) Standard 60 0.83 6 4 1.0 1139.7 1079.2 Analysis
7 Bo-Weskus Top Skole 2022 (Hoerskool) 2022/06/11 2022/06/11 West Coast (WCU) Rapid 30 0.60 5 4 2.0 1139.9 1224.8 Analysis
6 West Coast Primary Schools Prestige 2021 (U13 Boys) 2021/09/18 2021/09/18 West Coast (WCU) Rapid 30 0.60 5 5 2.0 1139.9 1236.0 Analysis
5 Bo-Weskus Skole Skaak Prestige 2021 (O13 Seuns) 2021/05/08 2021/05/08 West Coast (WCU) Rapid 30 0.60 5 5 3.0 1115.9 1221.6 Analysis
4 Bo-Weskus Skole Prestige 2020 (O13 Seuns) 2020/02/15 2020/02/15 West Coast (WCU) Standard 60 0.83 6 1 0.0 1128.5 1092.4 Analysis
3 Weskus Skole Prestige Skaak Kampioenskappe 2019 (O11 Seuns) 2019/03/02 2019/04/06 West Coast (WCU) Standard 60 0.83 6 5 1.0 1170.7 1141.6 Analysis
2 Bo-Weskus Skole Skaak Prestige 2019 (O11 Seuns) 2019/02/16 2019/02/16 West Coast (WCU) Rapid 30 0.60 7 7 4.0 1151.5 1200.0 Analysis
12
Game History
Colour Games Wins Draws Losses Score % Dp Aor Perform
Main All 24 8 2 14 9.0 37.5 -106.3 1253.4 1147.1
White 13 5 0 8 5.0 38.5 -98.1 1270.5 1172.4
Black 11 3 2 6 4.0 36.4 -115.9 1233.1 1117.2
Standard All 0 0 0 0 0.0 0.0 0.0 0.0 0.0
White 0 0 0 0 0.0 0.0 0.0 0.0 0.0
Black 0 0 0 0 0.0 0.0 0.0 0.0 0.0
Rapid All 24 8 2 14 9.0 37.5 -106.3 1253.4 1147.1
White 13 5 0 8 5.0 38.5 -98.1 1270.5 1172.4
Black 11 3 2 6 4.0 36.4 -115.9 1233.1 1117.2
Blitz All 0 0 0 0 0.0 0.0 0.0 0.0 0.0
White 0 0 0 0 0.0 0.0 0.0 0.0 0.0
Black 0 0 0 0 0.0 0.0 0.0 0.0 0.0
Colour Games Wins Draws Losses Score % Dp Aor Perform
Main All 103 42 4 57 44.0 42.7 -61.9 1229.5 1167.6
White 52 19 1 32 19.5 37.5 -106.3 1237.1 1130.9
Black 51 23 3 25 24.5 48.0 -16.7 1221.6 1205.0
Standard All 32 12 0 20 12.0 37.5 -106.3 1246.1 1139.8
White 15 4 0 11 4.0 26.7 -198.3 1241.2 1042.9
Black 17 8 0 9 8.0 47.1 -25.0 1250.3 1225.3
Rapid All 71 30 4 37 32.0 45.1 -41.9 1222.0 1180.1
White 37 15 1 21 15.5 41.9 -68.9 1235.5 1166.6
Black 34 15 3 16 16.5 48.5 -12.5 1207.3 1194.8
Blitz All 0 0 0 0 0.0 0.0 0.0 0.0 0.0
White 0 0 0 0 0.0 0.0 0.0 0.0 0.0
Black 0 0 0 0 0.0 0.0 0.0 0.0 0.0
Top 20 opponents most often played
#Chess SA idNameGamesScoreWinsDrawsLosses%AorDpPerformView
1 1070110603 Bell, N (Neyo) 3 1.0 1 0 2 33.3 1259.1 -141.7 1117.4 View list
2 106068748 Cloete, H (Howard) 3 1.0 1 0 2 33.3 1183.1 -141.7 1041.4 View list
3 1060110566 Cloete, C (Caleb) 3 1.0 1 0 2 33.3 1130.5 -141.7 988.8 View list
4 104093501 September, C (Carltin) 3 1.0 1 0 2 33.3 1139.7 -141.7 998.1 View list
5 1080147904 Johnson, J (Jerolin) 2 2.0 2 0 0 100.0 1247.2 425.0 1672.2 View list
6 1090110397 Makatees, H (Haywill) 2 2.0 2 0 0 100.0 1161.1 425.0 1586.1 View list
7 106090527 Ruiters, A (Arnold-James) 2 2.0 2 0 0 100.0 1254.9 425.0 1679.9 View list
8 1100143096 September, G (G-Naro) 2 2.0 2 0 0 100.0 1194.8 425.0 1619.8 View list
9 1060110582 Koegelenberg, D (Daniel) 2 1.5 1 1 0 75.0 1257.0 212.5 1469.5 View list
10 1090110403 Horn, M (Marshall) 2 1.0 1 0 1 50.0 1155.3 0.0 1155.3 View list
11 1080131878 Meyer, J (Junior) 2 1.0 1 0 1 50.0 1127.9 0.0 1127.9 View list
12 196042743 White, J (Jonavan) 2 1.0 1 0 1 50.0 1194.8 0.0 1194.8 View list
13 1110131966 Tieties, B (Beauton) 2 0.5 0 1 1 25.0 1138.7 -212.5 926.2 View list
14 1060138388 Hendricks, G (Guevante) 2 0.0 0 0 2 0.0 1257.0 -425.0 832.0 View list
15 1080110426 Berend, L (Luciano) 2 0.0 0 0 2 0.0 1161.1 -425.0 736.1 View list
16 109093484 Duiker, P (Phillip) 2 0.0 0 0 2 0.0 1123.8 -425.0 698.8 View list
17 1870149742 Bouwer, D (Dawid) 2 0.0 0 0 2 0.0 1138.7 -425.0 713.7 View list
18 109093559 Kameel, L (Lindon) 2 0.0 0 0 2 0.0 1143.5 -425.0 718.5 View list
19 207078017 Kilroe-Smith, I (Isabel) 2 0.0 0 0 2 0.0 1139.7 -425.0 714.7 View list
20 208078559 Van Zyl, M (Mea) 2 0.0 0 0 2 0.0 1193.2 -425.0 768.2 View list