Event: Roger Goldsmith Div 2

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Opponent	Rating	Result
Stephen Spurgeon	1500	1 - 0
George Robinson	1467	½ - ½
Eugene Husband	1636	0 - 1

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

1534 = (4603 + 400 * (1 - 1)) / 3)