Chess South Africa Ratings Database

PLAYER PAGE

Personal

May, JR (Justin Robin)

Chess SA id

195021987

FIDE id

Date of birth

1995-07-03 (Adult)

Gender

Male

Region

Nelson Mandela Bay (ENM)

Citizen

RSA

Titles

Chess SA registered

Last active game

2023-07-01

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

Item	Main	Standard	Rapid	Blitz
Rating	1626.3	1647.6	1600.5	1657
Raw rating	1626.3	1647.6	1600.5	1657
Weighted rating	1626	1647.6	1599.9	1656.9
Weighted performance	0	0	0	0
Floor	1147.6	1147.6	1147.6	1157
K-factor	28	28	28	28
Min/Max rating change allowed	90.3	87.6	93.7	86.5
Highest rating	1647.6 2019-08-01	1647.6 2019-08-01	1647.6 2019-08-01	1657 2024-02-01
Highest raw rating	1647.6 2020-01-01	1647.6 2024-02-01	1647.6 2020-01-01	1657 2024-02-01
Highest weighted rating	1647.6 2019-08-01	1647.6 2019-08-01	1647.6 2019-08-01	1656.7 2025-08-01
Highest weighted performance	1351.4 2023-07-01	1200 2024-02-01	1200 2020-01-01	1200 2024-02-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	0	0
New rating	1626.3	1647.6	1600.5	1657
Analysis
Rating	1626.3	1647.6	1600.5	1657
Raw rating	1626.3	1647.6	1600.5	1657
Weighted rating	1626	1647.6	1599.9
Weighted performance	0	0	0
K-factor	28	28	28	28
Floor	1147.6	1147.6	1147.6	1157
Max/Min rating change allowed	90.3	87.6	93.7	86.5
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	1626.3	1647.6	1600.5	1657
New weighted rating	1626.1	1647.6	1600	1657
New weighted performance	0	0	0	0
Temp new rating	1626.3	1647.6	1600.5	1657
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	1626.3	1647.6	1600.5	1657
New K-factor	28	28	28	28
New floor	1147.6	1147.6	1147.6	1157

Item	Main	Standard	Rapid
	0	0	0
	0	0	0
	0	0	0
	5	0	5
	0	0	0
	0	0	0
History	231	221	10

Games since
	Main 0	Standard 0		Rapid 0		Blitz 0
Gender	Male
Age group	Adult
Region	Nelson Mandela Bay (ENM)
Province	Eastern Cape (EC)
Main
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
Adult	-1		-1		-1
Adult Male	-1		-1		-1
Standard
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
Adult	-1		-1		-1
Adult Male	-1		-1		-1
Rapid
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
Adult	-1		-1		-1
Adult Male	-1		-1		-1
Blitz
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
Adult	-1		-1		-1
Adult 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	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
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	5	3	60	85	1337.5	1422.5
Standard	0	0	0	0	0	0
Rapid	5	3	60	85	1337.5	1422.5
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-09-30	1626.3	1647.6	1600.5	1657
2025-09-01	1626.3	1647.6	1600.5	1657
2025-08-01	1626.3	1647.6	1600.5	1657
2025-07-01	1626.3	1647.6	1600.5	1657
2025-06-01	1626.3	1647.6	1600.5	1657
2025-05-01	1626.3	1647.6	1600.5	1657
2025-04-01	1626.3	1647.6	1600.5	1657
2025-03-01	1626.3	1647.6	1600.5	1657
2025-02-01	1626.3	1647.6	1600.5	1657
2025-01-01	1625.6	1647.6	1598.9	1657
2024-12-01	1625.6	1647.6	1598.9	1657
2024-11-01	1625.6	1647.6	1598.9	1657
2024-10-01	1625.6	1647.6	1598.9	1657
2024-09-01	1625.6	1647.6	1598.9	1657
2024-08-01	1625.6	1647.6	1598.9	1657
2024-07-01	1625.6	1647.6	1598.9	1657
2024-06-01	1625.6	1647.6	1598.9	1657
2024-08-01	1625.6	1647.6	1598.9	1657
2024-04-01	1625.6	1647.6	1598.9	1657
2024-03-01	1625.6	1647.6	1598.9	1657
2024-02-01	1625.6	1647.6	1598.9	1657
2024-01-01	1625.6	1647.6	1598.9	1657
2023-12-01	1625.6	1647.6	1598.9	1647.6
2023-11-01	1625.6	1647.6	1598.9	1647.6

Comming soon.

Tournaments

History

No tournaments found.

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis

No tournaments found.

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis

Last 500 tournaments since 01 January 2018

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	Knysna Oyster Festival 2023 (Open)	2023-07-01	2023-07-01	Rapid	Eden (WEG)	6	5	3	Yes	Analysis

#	Games	Start				End
1	1	Tournament Knysna Oyster Festival 2023				Tournament Knysna Oyster Festival 2023
		date 2023-07-01	rnd 6	type Rapid	result 1	date 2023-07-01	rnd 6	type Rapid	result 1
		Opponent Stuurman, L (Luciano)				Opponent Stuurman, L (Luciano)
2	1	Tournament Knysna Oyster Festival 2023				Tournament Knysna Oyster Festival 2023
		date 2023-07-01	rnd 4	type Rapid	result 1	date 2023-07-01	rnd 4	type Rapid	result 1
		Opponent Nomdie, J (Jodi)				Opponent Nomdie, J (Jodi)
3	1	Tournament Knysna Oyster Festival 2023				Tournament Knysna Oyster Festival 2023
		date 2023-07-01	rnd 2	type Rapid	result 1	date 2023-07-01	rnd 2	type Rapid	result 1
		Opponent Thoresen, K (Kyle)				Opponent Thoresen, K (Kyle)

No games found.

#	Games	Start				End

#	Games	Start				End
1	1	Tournament Knysna Oyster Festival 2023				Tournament Knysna Oyster Festival 2023
		date 2023-07-01	rnd 6	type Rapid	result 1	date 2023-07-01	rnd 6	type Rapid	result 1
		Opponent Stuurman, L (Luciano)				Opponent Stuurman, L (Luciano)
2	1	Tournament Knysna Oyster Festival 2023				Tournament Knysna Oyster Festival 2023
		date 2023-07-01	rnd 4	type Rapid	result 1	date 2023-07-01	rnd 4	type Rapid	result 1
		Opponent Nomdie, J (Jodi)				Opponent Nomdie, J (Jodi)
3	1	Tournament Knysna Oyster Festival 2023				Tournament Knysna Oyster Festival 2023
		date 2023-07-01	rnd 2	type Rapid	result 1	date 2023-07-01	rnd 2	type Rapid	result 1
		Opponent Thoresen, K (Kyle)				Opponent Thoresen, K (Kyle)

No games found.

#	Games	Start				End

#	Games	Start				End
1	1	Tournament Knysna Oyster Festival 2023				Tournament Knysna Oyster Festival 2023
		date 2023-07-01	rnd 6	type Rapid	result 1	date 2023-07-01	rnd 6	type Rapid	result 1
		Opponent Stuurman, L (Luciano)				Opponent Stuurman, L (Luciano)
2	1	Tournament Knysna Oyster Festival 2023				Tournament Knysna Oyster Festival 2023
		date 2023-07-01	rnd 4	type Rapid	result 1	date 2023-07-01	rnd 4	type Rapid	result 1
		Opponent Nomdie, J (Jodi)				Opponent Nomdie, J (Jodi)
3	1	Tournament Knysna Oyster Festival 2023				Tournament Knysna Oyster Festival 2023
		date 2023-07-01	rnd 2	type Rapid	result 1	date 2023-07-01	rnd 2	type Rapid	result 1
		Opponent Thoresen, K (Kyle)				Opponent Thoresen, K (Kyle)

No games found.

#	Games	Start				End

#	Games	Start				End
1	1	Tournament Knysna Oyster Festival 2023				Tournament Knysna Oyster Festival 2023
		date 2023-07-01	rnd 6	type Rapid	result 1	date 2023-07-01	rnd 6	type Rapid	result 1
		Opponent Stuurman, L (Luciano)				Opponent Stuurman, L (Luciano)
2	1	Tournament Knysna Oyster Festival 2023				Tournament Knysna Oyster Festival 2023
		date 2023-07-01	rnd 4	type Rapid	result 1	date 2023-07-01	rnd 4	type Rapid	result 1
		Opponent Nomdie, J (Jodi)				Opponent Nomdie, J (Jodi)
3	1	Tournament Knysna Oyster Festival 2023				Tournament Knysna Oyster Festival 2023
		date 2023-07-01	rnd 2	type Rapid	result 1	date 2023-07-01	rnd 2	type Rapid	result 1
		Opponent Thoresen, K (Kyle)				Opponent Thoresen, K (Kyle)

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	Nomdie ,J (Jodi)	1	1	425	0	0	0	1	1	425	0	0	0
1	Nomdie ,J (Jodi)	1	1247.6	1672.6	0	0	0	1	973.2	1672.6	0	0	0
2	Thoresen ,K (Kyle)	1	1	425	0	0	0	1	1	425	0	0	0
2	Thoresen ,K (Kyle)	1	1252.4	1677.4	0	0	0	1	537.6	1677.4	0	0	0
3	Stuurman ,L (Luciano)	1	1	425	0	0	0	1	1	425	0	0	0
3	Stuurman ,L (Luciano)	1	1226.4	1651.4	0	0	0	1	1043.8	1651.4	0	0	0
4	Blaauw ,L (Lucin)	1	0	-425	0	0	0	1	0	-425	0	0	0
4	Blaauw ,L (Lucin)	1	1475.1	1050.1	0	0	0	1	1137.2	1050.1	0	0	0
5	Cloete ,R (Ralph)	1	0	-425	0	0	0	1	0	-425	0	0	0
5	Cloete ,R (Ralph)	1	1486	1061	0	0	0	1	1399.4	1061	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

Ratings

Tournaments

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PLAYER PAGE

Personal

May, JR (Justin Robin)

Ratings

Game statistics

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms