Event: South Cheshire Shield

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Opponent	Rating	Result
Alberto Gissi	1669	0 - 1
Roger Coleman	1279	1 - 0
Andrew Crosby	1447	0 - 1

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

1332 = (4395 + 400 * (1 - 2)) / 3)