Chess South Africa Ratings Database

PLAYER PAGE

Personal

Xu, J (Jiayi)

Chess SA id

1180303499

FIDE id

Date of birth

2018-07-28 (U8)

Gender

Male

Region

Buffalo City (EBC)

Citizen

RSA

Titles

Chess SA registered

Last active game

2025-08-16

Personal details last changed

1900-01-01

Junior GPX Games

36.9

Junior GPX Points

1073.8

Item	Main	Standard	Rapid	Blitz
Rating	1253.1	1258.3	1199.6	1200
Raw rating	1253.1	1258.3	1198.2	1200
Weighted rating	1225	1226.1	1199.6	1200
Weighted performance	1092.1	1026	0	0
Floor	764	768.2	700	700
K-factor	36	36	36	36
Min/Max rating change allowed	153.7	152.6	166.2	165.8
Highest rating	1302.7 2024-08-01	1298.8 2024-08-01	1200 2024-05-01	1200 2024-05-01
Highest raw rating	1264 2024-11-01	1268.2 2024-11-01	1200 2024-05-01	1200 2024-05-01
Highest weighted rating	1264 2024-10-01	1268.2 2024-10-01	1200 2024-05-01	1200 2024-05-01
Highest weighted performance	1302.7 2024-08-01	1298.8 2024-08-01	1200 2024-05-01	1200 2024-05-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	-0.1	0
New rating	1253.1	1258.3	1199.4	1200
Analysis
Rating	1253.1	1258.3	1199.6	1200
Raw rating	1253.1	1258.3	1198.2	1200
Weighted rating	1225	1226.1	1199.6
Weighted performance	1092.1	1026	0
K-factor	36	36	36	36
Floor	764	768.2	700	700
Max/Min rating change allowed	153.7	152.6	166.2	165.8
Games	0	0	0	0
Score	0	0	0	0
Expected score	0	0	0	0
Score-Expected	0	0	0	0
Temp raw +/-	0	0	0	0
Final raw +/-	0	0	0	0
New raw rating	1253.1	1258.3	1198.2	1200
New weighted rating	1227.7	1229.2	1199.4	1200
New weighted performance	1091.8	1025.7	0	0
Temp new rating	1253.1	1258.3	1199.4	1200
Temp new rating +/-	0	0	-0.1	0
Final new rating +/-	0	0	-0.1	0
New rating	1253.1	1258.3	1199.4	1200
New K-factor	36	36	36	36
New floor	764	768.2	700	700

Item	Main	Standard	Rapid
	0	0	0
	37	24	13
	29	29	0
	0	0	0
	0	0	0
	0	0	0
History	66	53	13

Games since
	Main 66	Standard 53		Rapid 13		Blitz 0
Gender	Male
Age group	U8
Region	Buffalo City (EBC)
Province	Eastern Cape (EC)
Main
	RSA		Province		Region
Overall	3605		486		155
Male	2777		392		123
U8	52		8		8
U8 Male	31		5		5
Standard
	RSA		Province		Region
Overall	3436		483		161
Male	2650		392		125
U8	57		7		7
U8 Male	35		5		5
Rapid
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U8	-1		-1		-1
U8 Male	-1		-1		-1
Blitz
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U8	-1		-1		-1
U8 Male	-1		-1		-1


	Games	Score	%	Dp	AvgOpp	Performance
Main	0	0	0	0	0	0
Standard	0	0	0	0	0	0
Rapid	0	0	0	0	0	0
Blitz	0	0	0	0	0	0

	Games	Score	%	Dp	AvgOpp	Performance
Main	37	14.5	39.19	-91.9	1254.6	1162.7
Standard	24	9	37.5	-106.2	1255.4	1149.2
Rapid	13	5.5	42.31	-65.4	1253.1	1187.7
Blitz	0	0	0	0	0	0
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	66	29.5	44.7	-45.1	1228.5	1183.5
Standard	53	24	45.28	-40.1	1222.5	1182.4
Rapid	13	5.5	42.31	-65.4	1253.1	1187.7
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-09-30	1253.1	1258.3	1198.2	1200
2025-09-01	1253.1	1258.3	1198.2	1200
2025-08-01	1218.3	1219.3	1198.2	1200
2025-07-01	1218.4	1218.8	1200	1200
2025-06-01	1217.5	1217.7	1200	1200
2025-05-01	1210.7	1209.1	1200	1200
2025-04-01	1217.6	1218.1	1199.9	1200
2025-03-01	1216.8	1217.4	1199.6	1200
2025-02-01	1214.9	1214.6	1200	1200
2025-01-01	1194.1	1183.6	1200	1200
2024-12-01	1264	1268.2	1200	1200
2024-11-01	1264	1268.2	1200	1200
2024-10-01	1243.3	1248.8	1200	1200
2024-09-01	1243.3	1248.8	1200	1200
2024-08-01	1211.6	1212.8	1200	1200
2024-07-01	1211.6	1212.8	1200	1200
2024-06-01	1194	1191.2	1200	1200
2024-08-01	1200	1200	1200	1200
2024-04-01	1200	1200	1200	1200
2024-03-01	1200	1200	1200	1200
2024-02-01	1200	1200	1200	1200
2024-01-01	1200	1200	1200	1200
2023-12-01	1200	1200	1200	1200
2023-11-01	1200	1200	1200	1200

Comming soon.

Tournaments

History

No tournaments found.

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	Buffalo City Chess Junior Closed 2025 (U8 Open+Girls)	2025-08-16	2025-08-16	Standard	Buffalo City (EBC)	5	4	1	Yes	Analysis
2	3rd Chess Vikings Open Championship 2025 (D)	2025-08-02	2025-08-02	Standard	Buffalo City (EBC)	6	6	4	Yes	Analysis
3	BC Schools Chess Festival 2025 (U7)	2025-07-26	2025-07-26	Standard	Buffalo City (EBC)	7	5	3	Yes	Analysis
4	Beacon Bay Winter Cup 2025 (C)	2025-07-09	2025-07-09	Rapid	Buffalo City (EBC)	6	6	2	Yes	Analysis
5	Vikings Holiday 2025 (D)	2025-04-05	2025-04-05	Standard	Buffalo City (EBC)	6	5	1	Yes	Analysis
6	2025 Buffalo City Chess Trials 1 (U8)	2025-03-22	2025-03-22	Standard	Buffalo City (EBC)	5	4	0	Yes	Analysis
7	Rapid Feb 2nd Leg 2025 (U8+U10)	2025-02-22	2025-02-22	Rapid	Buffalo City (EBC)	7	7	3.5	Yes	Analysis

Last 500 tournaments since 01 January 2018

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	Buffalo City Chess Junior Closed 2025 (U8 Open+Girls)	2025-08-16	2025-08-16	Standard	Buffalo City (EBC)	5	4	1	Yes	Analysis
2	3rd Chess Vikings Open Championship 2025 (D)	2025-08-02	2025-08-02	Standard	Buffalo City (EBC)	6	6	4	Yes	Analysis
3	BC Schools Chess Festival 2025 (U7)	2025-07-26	2025-07-26	Standard	Buffalo City (EBC)	7	5	3	Yes	Analysis
4	Beacon Bay Winter Cup 2025 (C)	2025-07-09	2025-07-09	Rapid	Buffalo City (EBC)	6	6	2	Yes	Analysis
5	Vikings Holiday 2025 (D)	2025-04-05	2025-04-05	Standard	Buffalo City (EBC)	6	5	1	Yes	Analysis
6	2025 Buffalo City Chess Trials 1 (U8)	2025-03-22	2025-03-22	Standard	Buffalo City (EBC)	5	4	0	Yes	Analysis
7	Rapid Feb 2nd Leg 2025 (U8+U10)	2025-02-22	2025-02-22	Rapid	Buffalo City (EBC)	7	7	3.5	Yes	Analysis
8	EL Junior Closed 2024 (U10)	2024-11-23	2024-11-23	Standard	Buffalo City (EBC)	5	4	0	Yes	Analysis
9	East London Open 2024 (C)	2024-11-05	2024-11-05	Standard	Buffalo City (EBC)	6	5	3	Yes	Analysis
10	5th BC Trails 2024 (U10B)	2024-08-17	2024-08-17	Standard	Buffalo City (EBC)	5	5	4.5	Yes	Analysis
11	5th BC Trails 2024 (U10B)	2024-08-17	2024-08-17	Standard	Buffalo City (EBC)	5	5	2	Yes	Analysis
12	4th BC Trials 2024 (U10B)	2024-06-08	2024-06-08	Standard	Buffalo City (EBC)	5	5	3	Yes	Analysis
13	3rd BC Trials 2024 (U10B)	2024-05-11	2024-05-11	Standard	Buffalo City (EBC)	5	5	2.5	Yes	Analysis

#	Games	Start				End
1	4	Tournament 5th BC Trails 2024				Tournament 5th BC Trails 2024
		date 2024-08-17	rnd 1	type Standard	result 1	date 2024-08-17	rnd 2	type Standard	result 1
		Opponent Mazikana, E (Elsie)				Opponent Kala, M (Mihle)
2	4	Tournament 3rd BC Trials 2024				Tournament 4th BC Trials 2024
		date 2024-05-11	rnd 3	type Standard	result 0.5	date 2024-06-08	rnd 1	type Standard	result 1
		Opponent Mpunga, N (Naluvuyo)				Opponent Bokolo, A (Awande)
3	3	Tournament BC Schools Chess Festival 2025				Tournament 3rd Chess Vikings Open Championship 2025
		date 2025-07-26	rnd 5	type Standard	result 1	date 2025-08-02	rnd 1	type Standard	result 1
		Opponent Mxabo, S (Sophumelela)				Opponent Gosling, E (Eli)

#	Games	Start				End
1	4	Tournament 5th BC Trails 2024				Tournament 5th BC Trails 2024
		date 2024-08-17	rnd 1	type Standard	result 1	date 2024-08-17	rnd 2	type Standard	result 1
		Opponent Mazikana, E (Elsie)				Opponent Kala, M (Mihle)
2	4	Tournament 3rd BC Trials 2024				Tournament 4th BC Trials 2024
		date 2024-05-11	rnd 3	type Standard	result 0.5	date 2024-06-08	rnd 1	type Standard	result 1
		Opponent Mpunga, N (Naluvuyo)				Opponent Bokolo, A (Awande)
3	3	Tournament BC Schools Chess Festival 2025				Tournament 3rd Chess Vikings Open Championship 2025
		date 2025-07-26	rnd 5	type Standard	result 1	date 2025-08-02	rnd 1	type Standard	result 1
		Opponent Mxabo, S (Sophumelela)				Opponent Gosling, E (Eli)

#	Games	Start				End
1	2	Tournament Beacon Bay Winter Cup 2025				Tournament Beacon Bay Winter Cup 2025
		date 2025-07-09	rnd 4	type Rapid	result 0.5	date 2025-07-09	rnd 5	type Rapid	result 0.5
		Opponent Masondwana, N (Ndalwentle)				Opponent Nonqane, Y (Yibanathi)
2	2	Tournament Rapid Feb 2nd Leg 2025				Tournament Beacon Bay Winter Cup 2025
		date 2025-02-22	rnd 7	type Rapid	result 0.5	date 2025-07-09	rnd 1	type Rapid	result 1
		Opponent Weng, J (Junjie)				Opponent Kapp, A (Alexi)
3	2	Tournament Rapid Feb 2nd Leg 2025				Tournament Rapid Feb 2nd Leg 2025
		date 2025-02-22	rnd 1	type Rapid	result 1	date 2025-02-22	rnd 2	type Rapid	result 1
		Opponent Mgudlwa, O (Okuhle)				Opponent Mabhera, A (Annelise'S Atipa)

No games found.

#	Games	Start				End

#	Games	Start				End
1	4	Tournament 5th BC Trails 2024				Tournament 5th BC Trails 2024
		date 2024-08-17	rnd 1	type Standard	result 1	date 2024-08-17	rnd 2	type Standard	result 1
		Opponent Mazikana, E (Elsie)				Opponent Kala, M (Mihle)
2	3	Tournament BC Schools Chess Festival 2025				Tournament 3rd Chess Vikings Open Championship 2025
		date 2025-07-26	rnd 5	type Standard	result 1	date 2025-08-02	rnd 1	type Standard	result 1
		Opponent Mxabo, S (Sophumelela)				Opponent Gosling, E (Eli)
3	3	Tournament East London Open 2024				Tournament East London Open 2024
		date 2024-11-05	rnd 2	type Standard	result 1	date 2024-11-05	rnd 4	type Standard	result 1
		Opponent Meyer, F (Fraser)				Opponent Sigungqa, S (Siphelele)

#	Games	Start				End
1	4	Tournament 5th BC Trails 2024				Tournament 5th BC Trails 2024
		date 2024-08-17	rnd 1	type Standard	result 1	date 2024-08-17	rnd 2	type Standard	result 1
		Opponent Mazikana, E (Elsie)				Opponent Kala, M (Mihle)
2	3	Tournament BC Schools Chess Festival 2025				Tournament 3rd Chess Vikings Open Championship 2025
		date 2025-07-26	rnd 5	type Standard	result 1	date 2025-08-02	rnd 1	type Standard	result 1
		Opponent Mxabo, S (Sophumelela)				Opponent Gosling, E (Eli)
3	3	Tournament East London Open 2024				Tournament East London Open 2024
		date 2024-11-05	rnd 2	type Standard	result 1	date 2024-11-05	rnd 4	type Standard	result 1
		Opponent Meyer, F (Fraser)				Opponent Sigungqa, S (Siphelele)

#	Games	Start				End
1	2	Tournament Rapid Feb 2nd Leg 2025				Tournament Rapid Feb 2nd Leg 2025
		date 2025-02-22	rnd 1	type Rapid	result 1	date 2025-02-22	rnd 2	type Rapid	result 1
		Opponent Mgudlwa, O (Okuhle)				Opponent Mabhera, A (Annelise'S Atipa)
2	1	Tournament Beacon Bay Winter Cup 2025				Tournament Beacon Bay Winter Cup 2025
		date 2025-07-09	rnd 1	type Rapid	result 1	date 2025-07-09	rnd 1	type Rapid	result 1
		Opponent Kapp, A (Alexi)				Opponent Kapp, A (Alexi)
3	1	Tournament Rapid Feb 2nd Leg 2025				Tournament Rapid Feb 2nd Leg 2025
		date 2025-02-22	rnd 4	type Rapid	result 1	date 2025-02-22	rnd 4	type Rapid	result 1
		Opponent SINGANZI, M (MELOKUHLE)				Opponent SINGANZI, M (MELOKUHLE)

No games found.

#	Games	Start				End

Top 10 opponents most often played

#	Opponent	Main			Standard			Rapid			Blitz
		Gms	Score	Dp	Gms	Score	Dp	Gms	Score	Dp	Gms	Score	Dp
		Gms	Aor	Prat	Gms	Aor	Prat	Gms	Aor	Prat	Gms	Aor	Prat
1	Makgaila ,M (Moagi)	4	1	-212.5	4	1	-212.5	0	0	0	0	0	0
1	Makgaila ,M (Moagi)	4	1289.9	1077.4	4	1291.8	1077.4	0	0	0	0	0	0
2	Weng ,J (Junjie)	4	0.5	-318.8	3	0	-425	1	0.5	0	0	0	0
2	Weng ,J (Junjie)	4	1375.8	1057.1	3	1423.6	950.8	1	1200	1375.8	0	0	0
3	Coetzee ,N (Niki)	3	0	-425	3	0	-425	0	0	0	0	0	0
3	Coetzee ,N (Niki)	3	1170.5	745.5	3	1160.6	745.5	0	0	0	0	0	0
4	Mazikana ,E (Elsie)	3	2	141.7	2	2	425	1	0	-425	0	0	0
4	Mazikana ,E (Elsie)	3	1205.5	1347.1	2	1206.8	1630.5	1	1200	780.5	0	0	0
5	Mgudlwa ,O (Okuhle)	3	1	-141.7	2	0	-425	1	1	425	0	0	0
5	Mgudlwa ,O (Okuhle)	3	1199.8	1058.2	2	1199.8	774.8	1	1200	1624.8	0	0	0
6	Zhang ,N (Nathan)	3	0	-425	1	0	-425	2	0	-425	0	0	0
6	Zhang ,N (Nathan)	3	1435.1	1010.1	1	1357.1	1010.1	2	1261	1010.1	0	0	0
7	Naidoo ,N (Nadeema)	2	2	425	2	2	425	0	0	0	0	0	0
7	Naidoo ,N (Nadeema)	2	1199.9	1624.9	2	1199.8	1624.9	0	0	0	0	0	0
8	Oleh ,O (Onyekachi)	2	1	0	2	1	0	0	0	0	0	0	0
8	Oleh ,O (Onyekachi)	2	1170.3	1170.3	2	1164.2	1170.3	0	0	0	0	0	0
9	Zhang ,L (Luofan)	2	0.5	-212.5	2	0.5	-212.5	0	0	0	0	0	0
9	Zhang ,L (Luofan)	2	1203.2	990.7	2	1203.4	990.7	0	0	0	0	0	0
10	Bokolo ,A (Awande)	2	2	425	2	2	425	0	0	0	0	0	0
10	Bokolo ,A (Awande)	2	1122.7	1547.7	2	1108.6	1547.7	0	0	0	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

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Personal

Xu, J (Jiayi)

Ratings

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Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms