Event: Hillingdon Div 1

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Opponent	Rating	Result
Russell Campbell	1853	½ - ½
JJ Padam	1782	½ - ½
Siena Gurjar	1561	1 - 0

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

1865 = (5196 + 400 * (1 - 0)) / 3)