Event: Division 3

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Opponent	Rating	Result
Adam Lovatt	1396	½ - ½
Joe Andrews	1627	½ - ½
Philip Erentz	1553	½ - ½
Graham J Gibson	1629	½ - ½
David Griffiths	1559	½ - ½
Adam Lovatt	1396	1 - 0
Eddie Jones	1303	½ - ½
Graham J Gibson	1629	1 - 0

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

1612 = (12092 + 400 * (2 - 0)) / 8)