Event: League Division One

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Opponent	Rating	Result
Mike J Donnelly	1930	½ - ½
John Conway	1630	1 - 0
Anumen Goel	0	0 - 1

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

1187 = (3560 + 400 * (1 - 1)) / 3)