Event: Autumn OTB Division 4

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Opponent	Rating	Result
Philip MacNeill	1323	0 - 1
Marcus Fung	1038	1 - 0
Phil Bennett	1600	½ - ½

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

1320 = (3961 + 400 * (1 - 1)) / 3)