Event: 4th Western Counties Online Championship

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Opponent	Rating	Result
Simon M Redmill	1636	1 - 0
Caleb Caleshu	1756	0 - 1
Gary Trudeau	1701	½ - ½

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

1698 = (5093 + 400 * (1 - 1)) / 3)