Event: Division 3 - Under 6400

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Opponent	Rating	Result
John E Dean	1540	1 - 0
Richard Brenton	1574	0 - 1
Ellis Manning	1500	0 - 1

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

1405 = (4614 + 400 * (1 - 2)) / 3)