Event: OTB RuleOf6-06Jul-A

Opponent Rating Result
Ian D Hunnable 2014 0 - 1
Terry D Whitton 1897 0 - 1
David Smith 1666 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1459 = (5577 + 400 * (0 - 3)) / 3)

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