Event: Roger Goldsmith Div 2

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Opponent Rating Result
Simon Marsden 1580 1 - 0
Joseph Penhaligan 1552 1 - 0
David (Abs) Bailey 1150 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1827 = (4282 + 400 * (3 - 0)) / 3)

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