Event: NSDCA Division 3

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Opponent Rating Result
Chris Simpson 1671 0 - 1
Alberto Gissi 1636 0 - 1
Nigel Gardner 1558 0 - 1
Waylon Chan 1380 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1161 = (6245 + 400 * (0 - 4)) / 4)

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