Event: Division Four

Opponent Rating Result
Adithya Vaidyanathan 1644 0 - 1
Robert J Purcell 1721 0 - 1
David J Friend 1620 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1395 = (4985 + 400 * (0 - 2)) / 3)

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