Event: Division 2

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Opponent	Rating	Result
Peter Hurn	1562	½ - ½
John Moxham	1445	½ - ½
Peter Dickinson	1526	0 - 1

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

1378 = (4533 + 400 * (0 - 1)) / 3)