Event: U1650 Cup

Opponent Rating Result
David Robertson 1384 1 - 0
Daniel Pugh 1616 0 - 1
Mark A Pulman 1648 0 - 1
Alan J Lewis 1551 ½ - ½
Thomas Sheat 1650 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1490 = (7849 + 400 * (1 - 2)) / 5)

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