Event: Division 3

Opponent Rating Result
Ian Gambles 1664 0 - 1
Raymond N Francis 1666 1 - 0
Ian P Blencowe 1535 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1755 = (4865 + 400 * (2 - 1)) / 3)

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