Chess South Africa Ratings Database

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Personal

Li, Z (Zhengfei)

Chess SA id

1090099818

FIDE id

Date of birth

2009-11-01 (U18)

Gender

Male

Region

Johannesburg Metro (GJM)

Citizen

RSA

Titles

Chess SA registered

Last active game

2025-07-19

Personal details last changed

1900-01-01

Junior GPX Games

58.7

Junior GPX Points

1717

Item	Main	Standard	Rapid	Blitz
Rating	1837.7	1839.5	1512.1	1548.8
Raw rating	1837.7	1839.5	1512.1	1548.8
Weighted rating	1798.2	1807.2	1446.8	1447.5
Weighted performance	1741.8	1764.2	0	0
Floor	1345.2	1343.7	1012.1	1048.8
K-factor	24	24	32	32
Min/Max rating change allowed	66.8	66.7	106.3	100.9
Highest rating	1845.2 2025-05-05	1843.7 2025-05-05	1611.9 2023-10-01	1548.8 2025-08-01
Highest raw rating	1845.2 2025-05-05	1843.7 2025-05-05	1512.1 2025-05-05	1548.8 2025-08-01
Highest weighted rating	1777.3 2025-08-01	1786.8 2025-08-01	1419.1 2025-08-01	1408.6 2025-08-01
Highest weighted performance	1820.8 2024-09-01	1841.7 2024-09-01	1611.9 2023-10-01	1526.8 2022-12-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	0	0
New rating	1837.7	1839.5	1512.1	1548.8
Analysis
Rating	1837.7	1839.5	1512.1	1548.8
Raw rating	1837.7	1839.5	1512.1	1548.8
Weighted rating	1798.2	1807.2	1446.8
Weighted performance	1741.8	1764.2	0
K-factor	24	24	32	32
Floor	1345.2	1343.7	1012.1	1048.8
Max/Min rating change allowed	66.8	66.7	106.3	100.9
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	1837.7	1839.5	1512.1	1548.8
New weighted rating	1804.1	1812.9	1454.8	1458.8
New weighted performance	1731.2	1753.4	0	0
Temp new rating	1837.7	1839.5	1512.1	1548.8
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	1837.7	1839.5	1512.1	1548.8
New K-factor	24	24	32	32
New floor	1345.2	1343.7	1012.1	1048.8

Item	Main	Standard	Rapid	Blitz
	0	0	0	0
	65	36	11	18
	56	42	5	9
	25	20	5	0
	56	44	5	7
	0	0	0	0
History	212	152	26	34

Games since
	Main 132	Standard 89		Rapid 16		Blitz 27
Gender	Male
Age group	U18
Region	Johannesburg Metro (GJM)
Province	Gauteng (GT)
Main
	RSA		Province		Region
Overall	129		54		24
Male	123		52		22
U18	14		6		2
U18 Male	14		6		2
Standard
	RSA		Province		Region
Overall	124		50		20
Male	117		48		18
U18	13		6		2
U18 Male	13		6		2
Rapid
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U18	-1		-1		-1
U18 Male	-1		-1		-1
Blitz
	RSA		Province		Region
Overall	118		39		21
Male	113		38		21
U18	8		4		3
U18 Male	8		4		3


	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	65	34.5	53.08	26.2	1856.5	1882.6
Standard	36	20	55.56	47.2	1796.6	1843.9
Rapid	11	4.5	40.91	-77.3	1898.6	1821.3
Blitz	18	10	55.56	47.2	1950.3	1997.6
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	212	143.5	67.69	150.4	1592.7	1743.1
Standard	152	103.5	68.09	153.8	1550.4	1704.1
Rapid	26	17.5	67.31	147.1	1630.5	1777.7
Blitz	34	22.5	66.18	137.5	1753.2	1890.7

Date	Main	Standard	Rapid	Blitz
2025-11-01	1837.7	1839.5	1512.1	1548.8
2025-09-30	1837.7	1839.5	1512.1	1548.8
2025-09-01	1837.7	1839.5	1512.1	1548.8
2025-08-01	1837.7	1839.5	1512.1	1548.8
2025-07-01	1839.5	1841.7	1512.1	1501.6
2025-06-01	1839.5	1841.7	1512.1	1501.6
2025-05-01	1845.2	1843.7	1512.1	1501.6
2025-04-01	1806.1	1828.2	1400.8	1371.8
2025-03-01	1806.1	1828.2	1400.8	1371.8
2025-02-01	1806.1	1828.2	1400.8	1371.8
2025-01-01	1806.1	1828.2	1400.8	1371.8
2024-12-01	1773.7	1814.3	1400.8	1371.8
2024-11-01	1773.7	1814.3	1400.8	1371.8
2024-10-01	1779	1822.5	1400.8	1371.8
2024-09-01	1721.5	1720.4	1400.8	1371.8
2024-08-01	1693.3	1691.8	1343.9	1371.8
2024-07-01	1692.1	1685.6	1343.9	1371.8
2024-09-01	1692.1	1685.6	1343.9	1371.8
2024-05-01	1692.1	1685.6	1343.9	1371.8
2024-04-01	1682.8	1670.8	1343.9	1371.8
2024-03-01	1683.9	1670.8	1343.9	1308.8
2024-02-01	1683.9	1670.8	1343.9	1308.8
2024-01-01	1672.3	1654.6	1343.9	1308.8
2023-12-01	1672.3	1654.6	1343.9	1308.8

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	2025 Wynie Robbertse Chess Tournament (A)	2025-07-19	2025-07-19	Standard	Tshwane (GTP)	5	5	3	Yes	Analysis
2	South African Open 2025 (Championship)	2025-06-28	2025-07-05	Standard	Johannesburg Metro (GJM)	11	10	4	Yes	Analysis
3	South African Open 2025 (Blitz)	2025-07-02	2025-07-02	Blitz	Johannesburg Metro (GJM)	9	8	5	Yes	Analysis
4	Ekurhuleni Trials 2025 (A)	2025-05-24	2025-05-24	Standard	Ekurhuleni (GE)	5	5	2.5	Yes	Analysis
5	2025 KZN Open (A)	2025-05-02	2025-05-04	Standard	Ethekwini (KED)	7	7	4.5	Yes	Analysis
6	FIDE World Cadet & Youth Rapid & Blitz Championships 2025 (Blitz)	2025-04-16	2025-04-17	Blitz	Geece (GRE)	11	10	5	Yes	Analysis
7	FIDE World Cadet & Youth Rapid & Blitz Championships 2025 (Rapid)	2025-04-13	2025-04-15	Rapid	Greece (GRE)	11	11	4.5	Yes	Analysis
8	South African Junior Closed Chess Championships 2025 (U16 Open)	2025-03-31	2025-04-05	Standard	Cape Winelands (WCW)	9	9	6	Yes	Analysis

Last 500 tournaments since 01 January 2018

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	2025 Wynie Robbertse Chess Tournament (A)	2025-07-19	2025-07-19	Standard	Tshwane (GTP)	5	5	3	Yes	Analysis
2	South African Open 2025 (Championship)	2025-06-28	2025-07-05	Standard	Johannesburg Metro (GJM)	11	10	4	Yes	Analysis
3	South African Open 2025 (Blitz)	2025-07-02	2025-07-02	Blitz	Johannesburg Metro (GJM)	9	8	5	Yes	Analysis
4	Ekurhuleni Trials 2025 (A)	2025-05-24	2025-05-24	Standard	Ekurhuleni (GE)	5	5	2.5	Yes	Analysis
5	2025 KZN Open (A)	2025-05-02	2025-05-04	Standard	Ethekwini (KED)	7	7	4.5	Yes	Analysis
6	FIDE World Cadet & Youth Rapid & Blitz Championships 2025 (Blitz)	2025-04-16	2025-04-17	Blitz	Geece (GRE)	11	10	5	Yes	Analysis
7	FIDE World Cadet & Youth Rapid & Blitz Championships 2025 (Rapid)	2025-04-13	2025-04-15	Rapid	Greece (GRE)	11	11	4.5	Yes	Analysis
8	South African Junior Closed Chess Championships 2025 (U16 Open)	2025-03-31	2025-04-05	Standard	Cape Winelands (WCW)	9	9	6	Yes	Analysis
9	Mzansi Interprovincial Youth Chess Championships 2024 (U16 Open Championship)	2024-12-16	2024-12-19	Standard	Capricorn (LCP)	7	7	6.5	Yes	Analysis
10	Mzansi Interprovincial Youth Chess Championships 2024 (U16 Open Combined)	2024-12-16	2024-12-19	Standard	Capricorn (LCP)	7	0	0	No	Analysis
11	Gauteng Inter-Region at UJ 2024 (U16 Open)	2024-12-07	2024-12-08	Standard	Johannesburg Metro (GJM)	5	5	3.5	Yes	Analysis
12	2024 Gauteng North Open Chess Tournament (A)	2024-10-05	2024-10-06	Standard	Tshwane (GTP)	5	5	3	Yes	Analysis
13	Knight Riders Spring Chess Tournament 2024 (A)	2024-09-28	2024-09-28	Standard	Johannesburg Metro (GJM)	5	5	5	Yes	Analysis
14	CPH King David Linksfield Aug Rapid 2024 (A)	2024-08-18	2024-08-18	Rapid	Johannesburg Metro (GJM)	5	5	4.5	Yes	Analysis
15	JMC Closed 2024 (A)	2024-08-09	2024-08-11	Standard	Johannesburg Metro (GJM)	5	5	2.5	Yes	Analysis
16	JMC Trinityhouse Randpark Ridge 2024 (A)	2024-07-13	2024-07-13	Standard	Johannesburg Metro (GJM)	5	5	2	Yes	Analysis
17	2024 KSNG CHess Academy Open Tournament (A)	2024-04-06	2024-04-06	Standard	Tshwane (GTP)	5	5	3	Yes	Analysis
18	Wanderers Blitz Tournament 2024	2024-03-23	2024-03-23	Blitz	Johannesburg Metro (GJM)	9	9	5.5	Yes	Analysis
19	2024 Gauteng Inter-Region Chess Championship (U16A)	2024-01-13	2024-01-14	Standard	Tshwane (GTP)	5	5	4	Yes	Analysis
20	World Youth Chess Championship 2023	2023-11-13	2023-11-24	Standard	FIDE (FID)	11	11	4.5	Yes	Analysis
21	Mzansi Bryanston Rapid 2023 (Advanced)	2023-10-07	2023-10-07	Rapid	Johannesburg Metro (GJM)	5	5	4	Yes	Analysis
22	2023 South African Junior Closed Chess Championships (U14 Open)	2023-03-31	2023-04-04	Standard	Chess South Africa (CSA)	9	9	8	Yes	Analysis
23	2022 South African Junior Team Chess Championships (U14 Open)	2022-12-04	2022-12-08	Standard	4 Knights (4K)	7	7	5	Yes	Analysis
24	2022 South Africa Junior Blitz Chess Championships (U14)	2022-12-05	2022-12-05	Blitz	4 Knights (4K)	7	7	7	Yes	Analysis
25	Mzansi Spring Open 2022 (Advanced)	2022-09-03	2022-09-03	Standard	Johannesburg Metro (GJM)	5	5	4	Yes	Analysis
26	JMC 3rd Trials 2022 (B)	2022-09-11	2022-09-11	Standard	Johannesburg Metro (GJM)	5	5	5	Yes	Analysis
27	JMC Womens Day 2022 (FIDE Open)	2022-08-06	2022-08-09	Standard	Johannesburg Metro (GJM)	6	6	2	Yes	Analysis
28	JMC 2nd Trials 2022 (B)	2022-08-27	2022-08-27	Standard	Johannesburg Metro (GJM)	5	5	3.5	Yes	Analysis
29	JNW Helpmekaar 2022 (Rookies)	2022-07-09	2022-07-09	Standard	Johannesburg Metro (GJM)	5	5	5	Yes	Analysis
30	JMC Trials 1 - Laerskool Fontainebleau 2022 (U14)	2022-07-24	2022-07-24	Standard	Johannesburg Metro (GJM)	5	5	4	Yes	Analysis
31	Chess Power House Rapid 2022 (B)	2022-06-11	2022-06-11	Rapid	Johannesburg Metro (GJM)	5	5	4.5	Yes	Analysis
32	Mzansi Open 2022 (Young Masters)	2022-04-30	2022-05-01	Standard	Johannesburg Metro (GJM)	6	6	5	Yes	Analysis
33	2018 Capablanca Swiss (D)	2018-04-27	2018-04-27	Standard	Tshwane (GTP)	5	5	4	Yes	Analysis
34	2018 Crawford Open (E)	2018-03-24	2018-03-24	Standard	Tshwane (GTP)	5	5	4	Yes	Analysis

#	Games	Start				End
1	19	Tournament 2018 Capablanca Swiss				Tournament JMC Trials 1 - Laerskool Fontainebleau 2022
		date 2018-04-27	rnd 5	type Standard	result 1	date 2022-07-24	rnd 2	type Standard	result 1
		Opponent Smith, LM (Luhane)				Opponent Naicker, GC (Gabriel Christian)
2	14	Tournament JMC Closed 2024				Tournament 2024 Gauteng North Open Chess Tournament
		date 2024-08-10	rnd 3	type Standard	result 1	date 2024-10-05	rnd 1	type Standard	result 1
		Opponent Chikwava, R (Ronald)				Opponent Scholtz, R (Rohanm)
3	13	Tournament Gauteng Inter-Region at UJ 2024				Tournament South African Junior Closed Chess Championships 2025
		date 2024-12-08	rnd 4	type Standard	result 1	date 2025-04-01	rnd 4	type Standard	result 0.5
		Opponent Badenhorst, JJ (Junaid Jaydon)				Opponent Felix, R (Raphael)

#	Games	Start				End
1	14	Tournament 2018 Capablanca Swiss				Tournament JMC Trials 1 - Laerskool Fontainebleau 2022
		date 2018-04-27	rnd 5	type Standard	result 1	date 2022-07-24	rnd 2	type Standard	result 1
		Opponent Smith, LM (Luhane)				Opponent Naicker, GC (Gabriel Christian)
2	13	Tournament Gauteng Inter-Region at UJ 2024				Tournament South African Junior Closed Chess Championships 2025
		date 2024-12-08	rnd 4	type Standard	result 1	date 2025-04-01	rnd 4	type Standard	result 0.5
		Opponent Badenhorst, JJ (Junaid Jaydon)				Opponent Felix, R (Raphael)
3	9	Tournament JMC Closed 2024				Tournament 2024 Gauteng North Open Chess Tournament
		date 2024-08-10	rnd 3	type Standard	result 1	date 2024-10-05	rnd 1	type Standard	result 1
		Opponent Chikwava, R (Ronald)				Opponent Scholtz, R (Rohanm)

#	Games	Start				End
1	8	Tournament Chess Power House Rapid 2022				Tournament Mzansi Bryanston Rapid 2023
		date 2022-06-11	rnd 1	type Rapid	result 1	date 2023-10-07	rnd 3	type Rapid	result 1
		Opponent Mazhande, M (Maita)				Opponent Thorulsley, K (Kairaav)
2	6	Tournament Mzansi Bryanston Rapid 2023				Tournament CPH King David Linksfield Aug Rapid 2024
		date 2023-10-07	rnd 5	type Rapid	result 1	date 2024-08-18	rnd 5	type Rapid	result 0.5
		Opponent Manaka, L (Lethabo)				Opponent Greenblatt, N (Noah M)
3	3	Tournament FIDE World Cadet & Youth Rapid & Blitz Championships 2025				Tournament FIDE World Cadet & Youth Rapid & Blitz Championships 2025
		date 2025-04-15	rnd 9	type Rapid	result 1	date 2025-04-15	rnd 11	type Rapid	result 0.5
		Opponent Gabsi, Ahmed Rayen				Opponent Chorosinski, Daniel

#	Games	Start				End
1	8	Tournament 2022 South Africa Junior Blitz Chess Championships				Tournament Wanderers Blitz Tournament 2024
		date 2022-12-05	rnd 1	type Blitz	result 1	date 2024-03-23	rnd 1	type Blitz	result 1
		Opponent Strydom, L (Leyan)				Opponent Cawthorn, W (William)
2	3	Tournament FIDE World Cadet & Youth Rapid & Blitz Championships 2025				Tournament FIDE World Cadet & Youth Rapid & Blitz Championships 2025
		date 2025-04-16	rnd 6	type Blitz	result 1	date 2025-04-17	rnd 8	type Blitz	result 1
		Opponent Abdallah, Mohamed Khalil				Opponent Wimmer, Michael
3	2	Tournament South African Open 2025				Tournament South African Open 2025
		date 2025-07-02	rnd 2	type Blitz	result 1	date 2025-07-02	rnd 3	type Blitz	result 1
		Opponent Budhram, K (Kaylee)				Opponent Machet, J (Jordan)

#	Games	Start				End
1	11	Tournament 2022 South Africa Junior Blitz Chess Championships				Tournament 2022 South African Junior Team Chess Championships
		date 2022-12-05	rnd 1	type Blitz	result 1	date 2022-12-07	rnd 6	type Standard	result 1
		Opponent Strydom, L (Leyan)				Opponent Chang, S (Samuel)
2	9	Tournament Mzansi Spring Open 2022				Tournament 2022 South African Junior Team Chess Championships
		date 2022-09-03	rnd 3	type Standard	result 1	date 2022-12-04	rnd 1	type Standard	result 1
		Opponent Thorulsley, K (Kairaav)				Opponent De Villiers, H (Hj)
3	7	Tournament Mzansi Interprovincial Youth Chess Championships 2024				Tournament South African Junior Closed Chess Championships 2025
		date 2024-12-17	rnd 4	type Standard	result 1	date 2025-04-01	rnd 3	type Standard	result 1
		Opponent Solomon, I (Izaiah)				Opponent Songo, D (Divine)

#	Games	Start				End
1	9	Tournament Mzansi Spring Open 2022				Tournament 2022 South African Junior Team Chess Championships
		date 2022-09-03	rnd 3	type Standard	result 1	date 2022-12-04	rnd 1	type Standard	result 1
		Opponent Thorulsley, K (Kairaav)				Opponent De Villiers, H (Hj)
2	7	Tournament Mzansi Interprovincial Youth Chess Championships 2024				Tournament South African Junior Closed Chess Championships 2025
		date 2024-12-17	rnd 4	type Standard	result 1	date 2025-04-01	rnd 3	type Standard	result 1
		Opponent Solomon, I (Izaiah)				Opponent Songo, D (Divine)
3	7	Tournament JNW Helpmekaar 2022				Tournament JMC Trials 1 - Laerskool Fontainebleau 2022
		date 2022-07-09	rnd 1	type Standard	result 1	date 2022-07-24	rnd 2	type Standard	result 1
		Opponent Bloem, S (Savanna)				Opponent Naicker, GC (Gabriel Christian)

#	Games	Start				End
1	5	Tournament Mzansi Bryanston Rapid 2023				Tournament CPH King David Linksfield Aug Rapid 2024
		date 2023-10-07	rnd 5	type Rapid	result 1	date 2024-08-18	rnd 4	type Rapid	result 1
		Opponent Manaka, L (Lethabo)				Opponent Weng, Y (Yu Bo (David))
2	4	Tournament Chess Power House Rapid 2022				Tournament Chess Power House Rapid 2022
		date 2022-06-11	rnd 1	type Rapid	result 1	date 2022-06-11	rnd 4	type Rapid	result 1
		Opponent Mazhande, M (Maita)				Opponent Kingsbury, J (Jack)
3	3	Tournament Mzansi Bryanston Rapid 2023				Tournament Mzansi Bryanston Rapid 2023
		date 2023-10-07	rnd 1	type Rapid	result 1	date 2023-10-07	rnd 3	type Rapid	result 1
		Opponent Gupta, A (Akul)				Opponent Thorulsley, K (Kairaav)

#	Games	Start				End
1	8	Tournament 2022 South Africa Junior Blitz Chess Championships				Tournament Wanderers Blitz Tournament 2024
		date 2022-12-05	rnd 1	type Blitz	result 1	date 2024-03-23	rnd 1	type Blitz	result 1
		Opponent Strydom, L (Leyan)				Opponent Cawthorn, W (William)
2	3	Tournament FIDE World Cadet & Youth Rapid & Blitz Championships 2025				Tournament FIDE World Cadet & Youth Rapid & Blitz Championships 2025
		date 2025-04-16	rnd 6	type Blitz	result 1	date 2025-04-17	rnd 8	type Blitz	result 1
		Opponent Abdallah, Mohamed Khalil				Opponent Wimmer, Michael
3	2	Tournament South African Open 2025				Tournament South African Open 2025
		date 2025-07-02	rnd 2	type Blitz	result 1	date 2025-07-02	rnd 3	type Blitz	result 1
		Opponent Budhram, K (Kaylee)				Opponent Machet, J (Jordan)

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	Weng ,Y (Yu Bo (David))	7	6	303.6	5	4	255	1	1	425	1	1	425
1	Weng ,Y (Yu Bo (David))	7	1601.9	1905.5	5	1613.6	1856.9	1	1339	2026.9	1	1200	2026.9
2	Sathish ,A (Abinavah)	4	1.5	-106.2	3	0.5	-283.3	0	0	0	1	1	425
2	Sathish ,A (Abinavah)	4	1716.4	1610.2	3	1723.6	1433.1	0	0	0	1	1443.2	2141.4
3	Naidoo ,K (Kajol)	3	3	425	3	3	425	0	0	0	0	0	0
3	Naidoo ,K (Kajol)	3	1514.6	1939.6	3	1519.9	1939.6	0	0	0	0	0	0
4	Naicker ,GC (Gabriel Christian)	3	3	425	3	3	425	0	0	0	0	0	0
4	Naicker ,GC (Gabriel Christian)	3	1377.2	1802.2	3	1365.4	1802.2	0	0	0	0	0	0
5	Naidoo ,K (Kirthan)	3	1.5	0	2	1	0	1	0.5	0	0	0	0
5	Naidoo ,K (Kirthan)	3	1564.2	1564.2	2	1610.5	1564.2	1	622.8	1564.2	0	0	0
6	Byliefeldt ,L (Leroux)	3	3	425	2	2	425	0	0	0	1	1	425
6	Byliefeldt ,L (Leroux)	3	1572.7	1997.7	2	1576.7	1997.7	0	0	0	1	916.2	1997.7
7	Xulu ,L (Lindokuhle)	3	0	-425	2	0	-425	0	0	0	1	0	-425
7	Xulu ,L (Lindokuhle)	3	2032.3	1607.3	2	2071.5	1607.3	0	0	0	1	1982.2	1607.3
8	Yang ,A (Alex)	2	2	425	2	2	425	0	0	0	0	0	0
8	Yang ,A (Alex)	2	1623.5	2048.5	2	1621.9	2048.5	0	0	0	0	0	0
9	Chikwava ,R (Ronald)	2	2	425	2	2	425	0	0	0	0	0	0
9	Chikwava ,R (Ronald)	2	1669.2	2094.2	2	1673.1	2094.2	0	0	0	0	0	0
10	Jacobs ,CN (Calvin Nicholas)	2	0.5	-212.5	2	0.5	-212.5	0	0	0	0	0	0
10	Jacobs ,CN (Calvin Nicholas)	2	1860.2	1647.7	2	1879.1	1647.7	0	0	0	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

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Li, Z (Zhengfei)

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