Player Page

Grobler, DDI (Donovan Denzel Izak)
Dob: 2009/12/13 (U16)
Gender: Male
Chess SA id: 109095323
FIDE id:
Region: Tshwane (GTP)
Citizen: RSA
Title(s):
Last active: 2024/02/24 (224 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 rating1219.7
Current Weighted rating1213.3
Current Weighted performance1103.2
Current official/published rating (highest between Raw, WR and WP)1219.7
Current highest rating achieved1285.2
Current floor (min rating allowed)785.2
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)±161.2
Current Raw change used (final)0.0
Projected new Raw rating1219.7
Projected new Weighed rating1116.8
Projected new Weighted performance1103.2
Projected new final Raw rating (if new WP > new Raw)1219.7
Projected new highest rating1285.2
Projected new floor785.2
Projected new K-facor36
Projected new official/published rating (highest between new Raw, new WR and new WP)1219.7
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 rating1210.8
Current Weighted rating1204.3
Current Weighted performance1103.2
Current official/published rating (highest between Raw, WR and WP)1210.8
Current highest rating achieved1281.6
Current floor (min rating allowed)781.6
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)±163.3
Current Raw change used (final)0.0
Projected new Raw rating1210.8
Projected new Weighed rating1108.7
Projected new Weighted performance1103.2
Projected new final Raw rating (if new WP > new Raw)1210.8
Projected new highest rating1281.6
Projected new floor781.6
Projected new K-facor36
Projected new official/published rating (highest between new Raw, new WR and new WP)1210.8
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 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
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 rating1047.2
Current Weighted rating1047.2
Current Weighted performance
Current official/published rating (highest between Raw, WR and WP)1047.2
Current highest rating achieved1154.8
Current floor (min rating allowed)654.8
Current K-factor40
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)±206.1
Current Raw change used (final)0.0
Projected new Raw rating1047.2
Projected new Weighed rating963.4
Projected new Weighted performance253.6
Projected new final Raw rating (if new WP > new Raw)1047.2
Projected new highest rating1154.8
Projected new floor654.8
Projected new K-facor40
Projected new official/published rating (highest between new Raw, new WR and new WP)1047.2
Projected effective change (new Official - current Official)=0.0
Tournaments
Did not participate this month.
#TournamentStartEndHostTypeTimeWeightRnsGmsScrMainTypeAnalysis
1 Grey College Team Championship 2024 (A) 2024/02/23 2024/02/24 Mangaung (FMB) Standard 60 0.83 5 5 2.0 1229.3 1226.3 Analysis
#TournamentStartEndHostTypeTimeWeightRoundsGamesScoreMainTypeAnalysis
32 Grey College Team Championship 2024 (A) 2024/02/23 2024/02/24 Mangaung (FMB) Standard 60 0.83 5 5 2.0 1229.3 1226.3 Analysis
31 Lardies Open Tournament 2023 (C) 2023/10/28 2023/10/28 Tshwane (GTP) Standard 60 0.83 5 5 3.0 1188.3 1177.0 Analysis
30 2023 Gauteng Top Schools (U15 Mixed) 2023/08/19 2023/08/19 West Rand (GWR) Standard 60 0.83 5 5 3.0 1156.6 1134.9 Analysis
29 2023 Tshwane South School District CLOSED League Championship (U15) 2023/07/29 2023/07/29 Tshwane (GTP) Standard 60 0.83 3 3 1.0 1166.8 1147.5 Analysis
28 2023 Tshwane South School District CLOSED Individual Championships (U15 Open) 2023/04/22 2023/04/22 Tshwane (GTP) Standard 60 0.83 5 5 1.0 1202.1 1190.3 Analysis
27 2023 Tshwane Chess Open Registration Tournament (B1) 2023/01/28 2023/01/28 Tshwane (GTP) Standard 60 0.83 5 4 1.0 1204.5 1191.4 Analysis
26 Lardies Tournament 2022 (U14) 2022/10/29 2022/10/29 Tshwane (GTP) Standard 60 0.83 5 5 3.0 1189.3 1170.2 Analysis
25 D4 Play Offs 2022 (U13) 2022/07/30 2022/07/30 Tshwane (GTP) Standard 60 0.83 5 5 2.0 1192.6 1172.4 Analysis
24 2022 Blou Bul Open (C) 2022/06/25 2022/06/26 Tshwane (GTP) Standard 90 0.94 5 5 2.0 1224.7 1206.6 Analysis
23 2022 Silver Lakes Chess Club Open Chess Tournament (C) 2022/05/14 2022/05/14 Tshwane (GTP) Standard 60 0.83 5 5 2.0 1250.1 1238.3 Analysis
22 2022 Gauteng Interregion (U14 Open) 2022/02/26 2022/02/26 Tshwane (GTP) Standard 60 0.83 5 5 2.0 1255.5 1244.8 Analysis
21 2022 Tshwane Chess Open Registration Tournament (C1) 2022/01/29 2022/01/29 Tshwane (GTP) Standard 60 0.83 5 5 2.0 1264.2 1256.0 Analysis
20 2021 Lardies Ope (C) 2021/10/30 2021/10/30 Tshwane (GTP) Standard 60 0.83 5 5 3.0 1243.6 1231.2 Analysis
19 2021 Etienne Lewis Closed Trials (U14 Open) 2021/09/24 2021/09/26 Nelson Mandela Bay (ENM) Standard 90 0.94 7 7 3.0 1276.4 1265.8 Analysis
18 2021 Chris Greyling Open Tournament (C) 2021/05/08 2021/05/08 Tshwane (GTP) Standard 60 0.83 5 5 3.0 1285.2 1281.6 Analysis
17 2021 Lubowski Open Tournament (C) 2021/05/01 2021/05/02 Tshwane (GTP) Standard 90 0.94 5 5 3.0 1285.2 1281.6 Analysis
16 2021 Registration Tournament (C) 2021/03/13 2021/03/13 Tshwane (GTP) Standard 60 0.83 5 5 3.0 1267.0 1259.3 Analysis
15 2020 Wynie Robbertse Open Chess Tournament (C) 2020/03/07 2020/03/07 Tshwane (GTP) Standard 60 0.83 5 5 3.0 1183.8 1171.6 Analysis
14 2020 Waterkloof Open (C) 2020/02/29 2020/03/01 Tshwane (GTP) Standard 90 0.94 5 5 3.0 1183.8 1171.6 Analysis
13 2020 Blou Bul (C) 2020/02/15 2020/02/15 Tshwane (GTP) Standard 60 0.83 5 5 2.0 1222.0 1218.4 Analysis
12
Game History
Colour Games Wins Draws Losses Score % Dp Aor Perform
Main All 5 2 0 3 2.0 40.0 -85.0 1251.9 1166.9
White 2 0 0 2 0.0 0.0 -425.0 1208.6 783.6
Black 3 2 0 1 2.0 66.7 141.7 1280.8 1422.5
Standard All 5 2 0 3 2.0 40.0 -85.0 1251.9 1166.9
White 2 0 0 2 0.0 0.0 -425.0 1208.6 783.6
Black 3 2 0 1 2.0 66.7 141.7 1280.8 1422.5
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 165 75 10 80 80.0 48.5 -12.9 1208.1 1195.2
White 84 37 6 41 40.0 47.6 -20.2 1214.0 1193.8
Black 81 38 4 39 40.0 49.4 -5.2 1201.9 1196.6
Standard All 155 73 8 74 77.0 49.7 -2.7 1202.2 1199.4
White 79 36 5 38 38.5 48.7 -10.8 1209.8 1199.0
Black 76 37 3 36 38.5 50.7 5.6 1194.3 1199.8
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 10 2 2 6 3.0 30.0 -170.0 1299.3 1129.3
White 5 1 1 3 1.5 30.0 -170.0 1281.0 1111.0
Black 5 1 1 3 1.5 30.0 -170.0 1317.5 1147.5
Top 20 opponents most often played
#Chess SA idNameGamesScoreWinsDrawsLosses%AorDpPerformView
1 1090104252 Van Deventer, NS (Nathaniel Steven) 4 1.0 1 0 3 25.0 1189.2 -212.5 976.7 View list
2 1100097309 O Rourke, R (Ronan) 3 3.0 3 0 0 100.0 1232.2 425.0 1657.2 View list
3 206090393 Mokoena, GP (Gonase) 3 2.0 2 0 1 66.7 1192.1 141.7 1333.8 View list
4 109092649 Webb, K (Kagan) 3 2.0 2 0 1 66.7 1188.7 141.7 1330.4 View list
5 1090104250 Bhudai, A (Arman) 3 0.0 0 0 3 0.0 1187.3 -425.0 762.3 View list
6 109086362 Yang, A (Alex) 3 0.0 0 0 3 0.0 1216.7 -425.0 791.7 View list
7 1080108331 Ferreira, L (Louis) 2 2.0 2 0 0 100.0 1249.2 425.0 1674.2 View list
8 1120109890 Grahan, T (Tylo) 2 2.0 2 0 0 100.0 1255.0 425.0 1680.0 View list
9 2090109345 Viljoen, A (Amber) 2 2.0 2 0 0 100.0 1237.4 425.0 1662.4 View list
10 1080097218 Beukes, A (Anton) 2 1.5 1 1 0 75.0 1185.3 212.5 1397.8 View list
11 109073377 Claassen, EG (Emileo) 2 1.0 1 0 1 50.0 1285.2 0.0 1285.2 View list
12 1090109066 Jooste, J (Josh) 2 1.0 1 0 1 50.0 1260.0 0.0 1260.0 View list
13 1100097226 Marais, JS (Jacobus) 2 1.0 1 0 1 50.0 1285.2 0.0 1285.2 View list
14 1090130089 Matsioloko, G (Godisang) 2 1.0 1 0 1 50.0 1280.8 0.0 1280.8 View list
15 2120115959 Mungal, Z (Zoey) 2 1.0 1 0 1 50.0 1202.9 0.0 1202.9 View list
16 109095317 Olivier, BM (Barnard) 2 1.0 1 0 1 50.0 1264.4 0.0 1264.4 View list
17 2100109361 Pillay, K (Ketana) 2 1.0 1 0 1 50.0 1216.9 0.0 1216.9 View list
18 2100109357 Theron, L (Lydia) 2 1.0 1 0 1 50.0 1194.8 0.0 1194.8 View list
19 110088599 Bogaard, FK (Franco) 2 0.0 0 0 2 0.0 1217.3 -425.0 792.3 View list
20 1090098574 Gounder, A (Arun) 2 0.0 0 0 2 0.0 1227.3 -425.0 802.3 View list