Player Page

Witbooi, S (Sergio)
Dob: 2011/01/01 (U14)
Gender: Male
Chess SA id: 1110099718
FIDE id:
Region: West Coast (WCU)
Citizen: RSA
Title(s):
Last active: 2019/09/01 (1709 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
Curent Raw rating1327.5
Curent Weighted rating1327.5
Curent Weighted performance536.7
Current official/published rating (highest between Raw, WR and WP)1327.5
Current floor (min rating allowed)827.5
Current highest rating achieved1327.5
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)±138.3
Current Raw change used (final)0.0
Projected new Raw rating1327.5
Projected new Weighed rating1327.5
Projected new Weighted performance536.7
Projected new official/published rating (highest between new Raw, new WR and new WP)1327.5
Projected effective change (new Official - current Official)=0.0
Projected new highest rating1327.5
Projected new floor827.5
Projected new K-facor36
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
Curent Raw rating1328.0
Curent Weighted rating1328.0
Curent Weighted performance512.2
Current official/published rating (highest between Raw, WR and WP)1328.0
Current floor (min rating allowed)828.0
Current highest rating achieved1328.0
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)±138.2
Current Raw change used (final)0.0
Projected new Raw rating1328.0
Projected new Weighed rating1328.0
Projected new Weighted performance512.2
Projected new official/published rating (highest between new Raw, new WR and new WP)1328.0
Projected effective change (new Official - current Official)=0.0
Projected new highest rating1328.0
Projected new floor828.0
Projected new K-facor36
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
Curent Raw rating1256.0
Curent Weighted rating1256.0
Curent Weighted performance0.0
Current official/published rating (highest between Raw, WR and WP)1256.0
Current floor (min rating allowed)756.0
Current highest rating achieved1256.0
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)±153.1
Current Raw change used (final)0.0
Projected new Raw rating1256.0
Projected new Weighed rating1256.0
Projected new Weighted performance0.0
Projected new official/published rating (highest between new Raw, new WR and new WP)1256.0
Projected effective change (new Official - current Official)=0.0
Projected new highest rating1256.0
Projected new floor756.0
Projected new K-facor36
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
Curent Raw rating1200.0
Curent Weighted rating1200.0
Curent Weighted performance0.0
Current official/published rating (highest between Raw, WR and WP)1200.0
Current floor (min rating allowed)756.0
Current highest rating achieved1200.0
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 rating1200.0
Projected new Weighted performance
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
Projected new highest rating1200.0
Projected new floor756.0
Projected new K-facor36
Tournaments
Did not participate this month.
Did not participate this year.
#TournamentStartEndHostTypeTimeWeightRoundsGamesScoreMainTypeAnalysis
7 Western Cape Top Schools 2019 (U9 Mix) 2019/08/31 2019/09/01 Cape Winelands (WCW) Standard 60 0.83 5 5 5.0 1253.7 1244.1 Analysis
6 Western Cape Schools Individuals 2019 (U9 Boys) 2019/05/18 2019/05/19 Eden District (WEG) Standard 60 0.83 6 6 3.0 1247.4 1230.4 Analysis
5 Weskus Skole Prestige Skaak Kampioenskappe 2019 (O9 Seuns) 2019/03/02 2019/04/06 West Coast (WCU) Standard 60 0.83 6 6 3.0 1263.8 1261.7 Analysis
4 Bo-Weskus Skole Skaak Prestige 2019 (O9 Seuns) 2019/02/16 2019/02/16 West Coast (WCU) Rapid 30 0.60 7 4 4.0 1222.8 1170.4 Analysis
3 Back 2 School 2019 (U8) 2019/01/19 2019/01/19 West Coast (WCU) Rapid 30 0.60 5 5 2.0 1250.4 1200.0 Analysis
2 Western Cape Top Schools 2018 (U7+U9 Mix) 2018/08/25 2018/08/26 Overberg (WOS) Standard 60 0.83 5 5 4.0 1219.3 1223.2 Analysis
1 West Coast Schools Prestige Individual Championship 2018 (U7 Boys) 2018/03/10 2018/03/24 West Coast (WCU) Standard 60 0.83 6 6 3.5 1200.0 1200.0 Analysis
Game History
Colour Games Wins Draws Losses Score % Dp Aor Perform
Main 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
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 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
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 37 24 1 12 24.5 66.2 137.8 1195.7 1333.5
White 18 13 0 5 13.0 72.2 188.9 1190.0 1378.9
Black 19 11 1 7 11.5 60.5 89.5 1201.1 1290.6
Standard All 28 18 1 9 18.5 66.1 136.6 1207.9 1344.5
White 13 10 0 3 10.0 76.9 228.8 1208.0 1436.9
Black 15 8 1 6 8.5 56.7 56.7 1207.7 1264.4
Rapid All 9 6 0 3 6.0 66.7 141.7 1157.9 1299.5
White 5 3 0 2 3.0 60.0 85.0 1143.1 1228.1
Black 4 3 0 1 3.0 75.0 212.5 1176.3 1388.8
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 110086098 Booysen, L (Lukas) 2 2.0 2 0 0 100.0 1233.3 425.0 1658.3 View list
2 1110110509 Strauss, J (Johan) 2 1.0 1 0 1 50.0 1243.3 0.0 1243.3 View list
3 2110099723 Cardinal, J (Jacelynn) 2 0.5 0 1 1 25.0 1225.2 -212.5 1012.7 View list
4 1110099722 Booysen, C (Chadlin) 2 0.0 0 0 2 0.0 1225.2 -425.0 800.2 View list
5 1110118927 Augustyn, J (Johan) 1 1.0 1 0 0 100.0 1253.7 425.0 1678.7 View list
6 1100108153 Arpin, L (Lukas) 1 1.0 1 0 0 100.0 1253.7 425.0 1678.7 View list
7 1100110514 Albertyn, J (Jowaiden) 1 1.0 1 0 0 100.0 1222.8 425.0 1647.8 View list
8 1100118468 De Bruin, L (Leo) 1 1.0 1 0 0 100.0 1253.7 425.0 1678.7 View list
9 1110110521 Cloete, K (Kian) 1 1.0 1 0 0 100.0 1222.8 425.0 1647.8 View list
10 1110099725 Cloete, K (Kayden) 1 1.0 1 0 0 100.0 1250.4 425.0 1675.4 View list
11 2110099724 Joseph, V (Vernitrune) 1 1.0 1 0 0 100.0 1200.0 425.0 1625.0 View list
12 1100116577 Hollenbaght, OJ (Owen James) 1 1.0 1 0 0 100.0 1222.8 425.0 1647.8 View list
13 1100108158 Godbeer, M (Michael) 1 1.0 1 0 0 100.0 1247.4 425.0 1672.4 View list
14 1110099716 Maarman, B (Blayden) 1 1.0 1 0 0 100.0 1200.0 425.0 1625.0 View list
15 1090104287 Liebenberg, B (Ben) 1 1.0 1 0 0 100.0 1219.3 425.0 1644.3 View list
16 2120099717 Lewaks, A (Andrea) 1 1.0 1 0 0 100.0 1250.4 425.0 1675.4 View list
17 1100103428 Fourie, O (Ockert) 1 1.0 1 0 0 100.0 1253.7 425.0 1678.7 View list
18 1090105978 Mazari, M (Mahdi) 1 1.0 1 0 0 100.0 1219.3 425.0 1644.3 View list
19 1100110492 November, J (Jovanni) 1 1.0 1 0 0 100.0 1263.8 425.0 1688.8 View list
20 1110110249 Oosthuizen, C (Conrad) 1 1.0 1 0 0 100.0 1263.8 425.0 1688.8 View list