Event: NCCA League Division 4

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Opponent Rating Result
Joe Chandler 1441 0 - 1
Gerry Clayton 1434 1 - 0
David B Elsey 1344 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1406 = (4219 + 400 * (1 - 1)) / 3)

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