Event: Division 2 Cup

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Opponent Rating Result
Norman G Andrews 1557 0 - 1
Barry Marshall 1772 ½ - ½
Luke Londesbrough 1523 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1484 = (4852 + 400 * (0 - 1)) / 3)

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