Event: 9th South Cheshire Shield

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Opponent	Rating	Result
Simon Layhe	134	½ - ½
Richard Renegade	129	0 - 1
John R Day	130	½ - ½

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

-2 = (393 + 400 * (0 - 1)) / 3)