Event: NSDCA Division 4

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Opponent Rating Result
Stuart E Hull 1340 0 - 1
Jay Swann 1272 0 - 1
Steve Knott 1150 0 - 1
Sawain Heenatigala Kanaththage 835 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

949 = (4597 + 400 * (1 - 3)) / 4)

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