Event: NCCA League Division 4

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Opponent Rating Result
Aaron Hodgson 1450 0 - 1
Colin Goodchild 1381 1 - 0
Kenneth R Ellis 1362 1 - 0
Tony Piper 1329 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1481 = (5522 + 400 * (2 - 1)) / 4)

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