Event: Peter Harrison Knockout Cup

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Opponent	Rating	Result
Derek I Lomax	1526	½ - ½
Nathan Cave	1599	½ - ½
Lorcan McCarthy	1584	1 - 0

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

1703 = (4709 + 400 * (1 - 0)) / 3)