Event: Rated club games

Opponent Rating Result
Wieslaw Stanicki 1467 ½ - ½
Wieslaw Stanicki 1472 0 - 1
Ian Threlkeld 1614 ½ - ½
David L Weston 1645 0 - 1
David L Weston 1661 ½ - ½
Ian Threlkeld 1605 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1511 = (9464 + 400 * (1 - 2)) / 6)

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