Player Page

Johnson, J (Jerolin)
Dob: 2008/01/23 (U18)
Gender: Male
Chess SA id: 1080147904
FIDE id:
Region: West Coast (WCU)
Citizen: RSA
Title(s):
Last active: 2024/08/24 (45 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 rating1174.5
Current Weighted rating1175.4
Current Weighted performance988.0
Current official/published rating (highest between Raw, WR and WP)1175.4
Current highest rating achieved1268.6
Current floor (min rating allowed)768.6
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)±172.0
Current Raw change used (final)0.0
Projected new Raw rating1174.5
Projected new Weighed rating1082.5
Projected new Weighted performance988.0
Projected new final Raw rating (if new WP > new Raw)1174.5
Projected new highest rating1268.6
Projected new floor768.6
Projected new K-facor36
Projected new official/published rating (highest between new Raw, new WR and new WP)1174.5
Projected effective change (new Official - current Official)-0.9
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 rating1204.8
Current Weighted rating1134.4
Current Weighted performance
Current official/published rating (highest between Raw, WR and WP)1204.8
Current highest rating achieved1204.8
Current floor (min rating allowed)704.8
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)±164.7
Current Raw change used (final)0.0
Projected new Raw rating1204.8
Projected new Weighed rating1045.0
Projected new Weighted performance681.7
Projected new final Raw rating (if new WP > new Raw)1204.8
Projected new highest rating1204.8
Projected new floor704.8
Projected new K-facor36
Projected new official/published rating (highest between new Raw, new WR and new WP)1204.8
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 rating1085.6
Current Weighted rating1197.9
Current Weighted performance941.0
Current official/published rating (highest between Raw, WR and WP)1197.9
Current highest rating achieved1222.0
Current floor (min rating allowed)722.0
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)±195.2
Current Raw change used (final)0.0
Projected new Raw rating1085.6
Projected new Weighed rating1101.2
Projected new Weighted performance941.0
Projected new final Raw rating (if new WP > new Raw)1085.6
Projected new highest rating1222.0
Projected new floor722.0
Projected new K-facor36
Projected new official/published rating (highest between new Raw, new WR and new WP)1101.2
Projected effective change (new Official - current Official)-96.6
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 The Rooibos Open 2024 (Elite) 2024/08/24 2024/08/24 West Coast (WCU) Rapid 35 0.66 5 4 0.0 1216.8 1136.0 Analysis
4 Vredendal North CC Open 2024 (Elite) 2024/07/27 2024/07/27 West Coast (WCU) Rapid 28 0.58 5 5 0.0 1268.6 1222.0 Analysis
3 West Coast & Mykonos Open 2024 (Open) 2024/05/17 2024/05/19 West Coast (WCU) Standard 90 0.94 6 5 4.0 1145.8 1093.6 Analysis
2 Bo-Weskus Skole Skaak Top Skole 2024 (O18) 2024/05/11 2024/05/11 West Coast (WCU) Rapid 30 0.60 5 5 1.0 1145.8 1221.6 Analysis
1 Lambersbaai Open 2024 (A) 2024/05/01 2024/05/01 West Coast (WCU) Rapid 32 0.63 5 4 3.0 1145.8 1221.6 Analysis
#TournamentStartEndHostTypeTimeWeightRoundsGamesScoreMainTypeAnalysis
7 The Rooibos Open 2024 (Elite) 2024/08/24 2024/08/24 West Coast (WCU) Rapid 35 0.66 5 4 0.0 1216.8 1136.0 Analysis
6 Vredendal North CC Open 2024 (Elite) 2024/07/27 2024/07/27 West Coast (WCU) Rapid 28 0.58 5 5 0.0 1268.6 1222.0 Analysis
5 West Coast & Mykonos Open 2024 (Open) 2024/05/17 2024/05/19 West Coast (WCU) Standard 90 0.94 6 5 4.0 1145.8 1093.6 Analysis
4 Bo-Weskus Skole Skaak Top Skole 2024 (O18) 2024/05/11 2024/05/11 West Coast (WCU) Rapid 30 0.60 5 5 1.0 1145.8 1221.6 Analysis
3 Lambersbaai Open 2024 (A) 2024/05/01 2024/05/01 West Coast (WCU) Rapid 32 0.63 5 4 3.0 1145.8 1221.6 Analysis
2 Clanwilliam Open 2022 (C) 2022/12/10 2022/12/10 West Coast (WCU) Rapid 35 0.66 5 5 3.0 1119.4 1200.0 Analysis
1 West Coast Open 2022 (Open) 2022/11/05 2022/11/05 West Coast (WCU) Standard 65 0.85 6 6 0.0 1200.0 1200.0 Analysis
Game History
Colour Games Wins Draws Losses Score % Dp Aor Perform
Main All 23 8 0 15 8.0 34.8 -129.3 1286.1 1156.8
White 11 3 0 8 3.0 27.3 -193.2 1307.0 1113.8
Black 12 5 0 7 5.0 41.7 -70.8 1267.0 1196.2
Standard All 5 4 0 1 4.0 80.0 255.0 1350.6 1605.6
White 2 2 0 0 2.0 100.0 425.0 1269.5 1694.5
Black 3 2 0 1 2.0 66.7 141.7 1404.7 1546.4
Rapid All 18 4 0 14 4.0 22.2 -236.1 1268.2 1032.1
White 9 1 0 8 1.0 11.1 -330.6 1315.3 984.8
Black 9 3 0 6 3.0 33.3 -141.7 1221.1 1079.5
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 34 11 0 23 11.0 32.4 -150.0 1271.2 1121.2
White 15 4 0 11 4.0 26.7 -198.3 1293.4 1095.1
Black 19 7 0 12 7.0 36.8 -111.8 1253.6 1141.8
Standard All 11 4 0 7 4.0 36.4 -115.9 1310.4 1194.5
White 4 2 0 2 2.0 50.0 0.0 1271.1 1271.1
Black 7 2 0 5 2.0 28.6 -182.1 1332.9 1150.7
Rapid All 23 7 0 16 7.0 30.4 -166.3 1252.4 1086.1
White 11 2 0 9 2.0 18.2 -270.5 1301.6 1031.1
Black 12 5 0 7 5.0 41.7 -70.8 1207.4 1136.6
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 1120100598 Ellman, A (Andries) 2 1.0 1 0 1 50.0 1132.6 0.0 1132.6 View list
2 1080099747 Van Rooyen, S (Sergio) 2 0.0 0 0 2 0.0 1207.2 -425.0 782.2 View list
3 1000134275 Van Wyk, E (Ebrahim) 2 0.0 0 0 2 0.0 1207.2 -425.0 782.2 View list
4 1100103503 Arendse, Q (Quinwinne) 1 1.0 1 0 0 100.0 1145.8 425.0 1570.8 View list
5 1100154575 Kamfer, J (Johnlin) 1 1.0 1 0 0 100.0 1145.8 425.0 1570.8 View list
6 1140137106 Jordaan, L (Luke) 1 1.0 1 0 0 100.0 1145.8 425.0 1570.8 View list
7 1120139044 Koopman, V (Virat) 1 1.0 1 0 0 100.0 1145.8 425.0 1570.8 View list
8 2130153778 Kujinga, T (Tawanayasha) 1 1.0 1 0 0 100.0 1145.8 425.0 1570.8 View list
9 1070304916 Salomo, C (Cohen) 1 1.0 1 0 0 100.0 1145.8 425.0 1570.8 View list
10 1110131962 Skippers, G (Gerano) 1 1.0 1 0 0 100.0 1119.4 425.0 1544.4 View list
11 1110148171 Swarts, C (Caleb) 1 1.0 1 0 0 100.0 1119.4 425.0 1544.4 View list
12 2130139089 Swartz, A (Ashan) 1 1.0 1 0 0 100.0 1119.4 425.0 1544.4 View list
13 2080192522 Van Zyl, A (Ane) 1 1.0 1 0 0 100.0 1145.8 425.0 1570.8 View list
14 1100110503 Shoshola, D (Diego) 1 0.0 0 0 1 0.0 1119.4 -425.0 694.4 View list
15 209090556 Sauls, J (Jada) 1 0.0 0 0 1 0.0 1200.0 -425.0 775.0 View list
16 2100142543 Love, C (Celine) 1 0.0 0 0 1 0.0 1200.0 -425.0 775.0 View list
17 1050106797 Kotze, K (Kurt) 1 0.0 0 0 1 0.0 1268.6 -425.0 843.6 View list
18 1060110582 Koegelenberg, D (Daniel) 1 0.0 0 0 1 0.0 1145.8 -425.0 720.8 View list
19 1100116577 Hollenbaght, OJ (Owen James) 1 0.0 0 0 1 0.0 1200.0 -425.0 775.0 View list
20 1060138388 Hendricks, G (Guevante) 1 0.0 0 0 1 0.0 1145.8 -425.0 720.8 View list