Event: NCCA League Division 4

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Opponent Rating Result
Heather Enid Walker 1225 0 - 1
Raymond Long 1400 1 - 0
Dennis G Driscoll 1370 ½ - ½
Heather Enid Walker 1186 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1395 = (5181 + 400 * (2 - 1)) / 4)

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