Event: Division 3

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Opponent Rating Result
Rory Lynas 1497 ½ - ½
Roy G Watson 1487 ½ - ½
Paul Davies 1532 0 - 1
Barry Knee 1473 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1297 = (5989 + 400 * (0 - 2)) / 4)

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