Event: Haslemere Trophy

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Opponent Rating Result
Peter Hegarty 1625 0 - 1
Scott Leadbetter 1657 1 - 0
Peter Hegarty 1625 1 - 0
Scott Leadbetter 1657 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1641 = (6564 + 400 * (2 - 2)) / 4)

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