Event: Folkestone Club Championship

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Opponent	Rating	Result
Thomas Milligan	1344	1 - 0
David Erwee	1413	0 - 1
Oliver White	1272	1 - 0

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

1476 = (4029 + 400 * (2 - 1)) / 3)