Event: Division 1

Opponent Rating Result
Peter E Chaplin 2027 ½ - ½
David O Collier 1981 1 - 0
Indura Sapuarachchige 0 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1336 = (4008 + 400 * (1 - 1)) / 3)

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