Event: South Bristol Junior Championship

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Opponent	Rating	Result
David Kowalski	1283	1 - 0
Alexis Kristoff Malibiran	1304	0 - 1
Charles Higenbottam	964	0 - 1
Aidan McCarron	0	1 - 0
Advay Misra	1186	0 - 1
Idris Uthman	0	1 - 0
Barnaby Pike	0	0 - 1

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

620 = (4737 + 400 * (3 - 4)) / 7)