Player Page

De Jager, J (Jonathan)
Dob: 2009/07/23 (U16)
Gender: Male
Chess SA id: 1090157479
FIDE id:
Region: Amajuba (KAN)
Citizen: RSA
Title(s):
Last active: 2024/07/07 (138 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 rating1307.6
Current Weighted rating1245.2
Current Weighted performance
Current official/published rating (highest between Raw, WR and WP)1307.6
Current highest rating achieved1309.3
Current floor (min rating allowed)809.3
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)±142.2
Current Raw change used (final)0.0
Projected new Raw rating1307.6
Projected new Weighed rating1147.3
Projected new Weighted performance1212.5
Projected new final Raw rating (if new WP > new Raw)1307.6
Projected new highest rating1309.3
Projected new floor809.3
Projected new K-facor36
Projected new official/published rating (highest between new Raw, new WR and new WP)1307.6
Projected effective change (new Official - current Official)=0.0
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 rating1282.1
Current Weighted rating1234.9
Current Weighted performance
Current official/published rating (highest between Raw, WR and WP)1282.1
Current highest rating achieved1282.1
Current floor (min rating allowed)782.1
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)±147.5
Current Raw change used (final)0.0
Projected new Raw rating1282.1
Projected new Weighed rating1137.3
Projected new Weighted performance807.2
Projected new final Raw rating (if new WP > new Raw)1282.1
Projected new highest rating1282.1
Projected new floor782.1
Projected new K-facor36
Projected new official/published rating (highest between new Raw, new WR and new WP)1282.1
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 rating1294.7
Current Weighted rating1237.9
Current Weighted performance
Current official/published rating (highest between Raw, WR and WP)1294.7
Current highest rating achieved1294.7
Current floor (min rating allowed)794.7
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)±144.9
Current Raw change used (final)0.0
Projected new Raw rating1294.7
Projected new Weighed rating1140.4
Projected new Weighted performance753.1
Projected new final Raw rating (if new WP > new Raw)1294.7
Projected new highest rating1294.7
Projected new floor794.7
Projected new K-facor36
Projected new official/published rating (highest between new Raw, new WR and new WP)1294.7
Projected effective change (new Official - current Official)=0.0
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
3 South African Open Chess Championship 2024 (C) 2024/07/04 2024/07/07 Ethekwini (KED) Standard 90 0.94 7 7 3.5 1309.3 1279.2 Analysis
2 Curro Chess Tournament 2024 (U16) 2024/05/18 2024/05/18 Ehlanzeni (MEN) Standard 63 0.84 5 5 4.0 1254.0 1200.0 Analysis
1 NWU Super 16 2024 2024/04/19 2024/04/19 Gert Sibande (MGS) Rapid 30 0.60 6 6 6.0 1189.8 1180.6 Analysis
#TournamentStartEndHostTypeTimeWeightRoundsGamesScoreMainTypeAnalysis
4 South African Open Chess Championship 2024 (C) 2024/07/04 2024/07/07 Ethekwini (KED) Standard 90 0.94 7 7 3.5 1309.3 1279.2 Analysis
3 Curro Chess Tournament 2024 (U16) 2024/05/18 2024/05/18 Ehlanzeni (MEN) Standard 63 0.84 5 5 4.0 1254.0 1200.0 Analysis
2 NWU Super 16 2024 2024/04/19 2024/04/19 Gert Sibande (MGS) Rapid 30 0.60 6 6 6.0 1189.8 1180.6 Analysis
1 2023 KZN Winter Schools Selections (U15 Boys) 2023/06/24 2023/06/24 Ethekwini (KED) Rapid 30 0.60 7 7 3.0 1200.0 1200.0 Analysis
Game History
Colour Games Wins Draws Losses Score % Dp Aor Perform
Main All 18 13 1 4 13.5 75.0 212.5 1273.7 1486.2
White 11 8 0 3 8.0 72.7 193.2 1264.5 1457.7
Black 7 5 1 1 5.5 78.6 242.9 1288.2 1531.0
Standard All 12 7 1 4 7.5 62.5 106.3 1311.0 1417.3
White 7 4 0 3 4.0 57.1 60.7 1302.2 1362.9
Black 5 3 1 1 3.5 70.0 170.0 1323.5 1493.5
Rapid All 6 6 0 0 6.0 100.0 425.0 1199.1 1624.1
White 4 4 0 0 4.0 100.0 425.0 1198.7 1623.7
Black 2 2 0 0 2.0 100.0 425.0 1200.0 1625.0
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 25 16 1 8 16.5 66.0 136.0 1255.5 1391.5
White 15 9 0 6 9.0 60.0 85.0 1247.3 1332.3
Black 10 7 1 2 7.5 75.0 212.5 1267.8 1480.3
Standard All 12 7 1 4 7.5 62.5 106.3 1311.0 1417.3
White 7 4 0 3 4.0 57.1 60.7 1302.2 1362.9
Black 5 3 1 1 3.5 70.0 170.0 1323.5 1493.5
Rapid All 13 9 0 4 9.0 69.2 163.5 1204.3 1367.8
White 8 5 0 3 5.0 62.5 106.3 1199.3 1305.6
Black 5 4 0 1 4.0 80.0 255.0 1212.2 1467.2
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
Top 20 opponents most often played
#Chess SA idNameGamesScoreWinsDrawsLosses%AorDpPerformView
1 1100302255 Sehole, K (Keaotshepa) 1 1.0 1 0 0 100.0 1189.8 425.0 1614.8 View list
2 1120162493 Moorosi, T (Thato) 1 1.0 1 0 0 100.0 1309.3 425.0 1734.3 View list
3 107072911 Mona, M (Celukubonga) 1 1.0 1 0 0 100.0 1189.8 425.0 1614.8 View list
4 1100304823 Mkhize, M (Mpilenhle) 1 1.0 1 0 0 100.0 1254.0 425.0 1679.0 View list
5 1090157496 Mazibuko, A (Ayabonga) 1 1.0 1 0 0 100.0 1200.0 425.0 1625.0 View list
6 1090156696 Makamo, M (Mihla) 1 1.0 1 0 0 100.0 1254.0 425.0 1679.0 View list
7 2130149319 Madhoo, P (Prathana) 1 1.0 1 0 0 100.0 1309.3 425.0 1734.3 View list
8 1100152016 Mabuza, S (Sonke) 1 1.0 1 0 0 100.0 1254.0 425.0 1679.0 View list
9 1080154372 Kwakwa, M (Moshe) 1 1.0 1 0 0 100.0 1189.8 425.0 1614.8 View list
10 1070145423 Kgabo, TN (Thobile) 1 1.0 1 0 0 100.0 1189.8 425.0 1614.8 View list
11 1060302245 Naude, D (Dariel) 1 1.0 1 0 0 100.0 1189.8 425.0 1614.8 View list
12 1090302247 Nelson, D (Duncan) 1 1.0 1 0 0 100.0 1189.8 425.0 1614.8 View list
13 1080157514 Nxumalo, O (Odwa) 1 1.0 1 0 0 100.0 1200.0 425.0 1625.0 View list
14 1090152037 Sierra, C (Cj) 1 1.0 1 0 0 100.0 1254.0 425.0 1679.0 View list
15 108092581 Taljaard, C (Connor) 1 1.0 1 0 0 100.0 1309.3 425.0 1734.3 View list
16 1100157521 Zondo, Y (Yamkela) 1 1.0 1 0 0 100.0 1200.0 425.0 1625.0 View list
17 1090306550 Omile, C (Chukwuebuka Raphael) 1 0.5 0 1 0 50.0 1309.3 0.0 1309.3 View list
18 108088678 Pearson, D (Dane) 1 0.0 0 0 1 0.0 1309.3 -425.0 884.3 View list
19 110087575 Ogunjiofor, CJ (Chinedu Jeremy) 1 0.0 0 0 1 0.0 1254.0 -425.0 829.0 View list
20 1080157513 Ntuli, S (Samkelo) 1 0.0 0 0 1 0.0 1200.0 -425.0 775.0 View list