Event: Division 5

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Opponent	Rating	Result
Richard Oxnard	1576	0 - 1
Alan Johnson	1587	0 - 1
Jere Koskela	1449	½ - ½

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

1271 = (4612 + 400 * (0 - 2)) / 3)