Event: Bottom Half A&B Division

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Opponent Rating Result
Thomas Pyman 1200 1 - 0
Suresh Keswani 1758 0 - 1
Dave Frank 1516 0 - 1
Jake Pearson 1600 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1319 = (6074 + 400 * (1 - 3)) / 4)

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