Event: 4 Board League A

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Opponent Rating Result
Brendan Smith 0 0 - 1
Barry Thompson 1198 0 - 1
Bartoz Przewiezlikowski 0 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

-1 = (1198 + 400 * (0 - 3)) / 3)

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