Event: Roger Goldsmith Div 2

Opponent Rating Result
Peter Newton 1728 0 - 1
Nathan Cartledge 1508 0 - 1
Vikram K Banerjee 1568 0 - 1
Nathan Weersing 1600 1 - 0
Stephen Spurgeon 1495 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1420 = (7899 + 400 * (1 - 3)) / 5)

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