Event: EJCOA South Yorkshire U16/U14/U12

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Opponent	Rating	Result
Lysander Lawson	1243	0 - 1
Harley Lidster	0	1 - 0
Aryan Shankar	1226	0 - 1
Vihaan Singla	806	1 - 0
Oscar Yan	1152	0 - 1

performance = (sum(opponents ratings) + 400(wins-losses)) / games

805 = (4427 + 400 * (2 - 3)) / 5)