Event: Division 3 - Under 6400

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Opponent	Rating	Result
Oliver Quartley	1650	½ - ½
Jun Li Yeap	1600	½ - ½
James Day	1697	1 - 0
Kit Nicholson	1400	½ - ½
Kit Nicholson	1400	1 - 0
Oliver Quartley	1650	1 - 0
James Day	1697	0 - 1

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

1699 = (11094 + 400 * (3 - 1)) / 7)