Event: NCCA League Division 2

Opponent Rating Result
Joe Ross 1780 1 - 0
David J Twitchell 1856 0 - 1
Michael J Gibbons 1864 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1967 = (5500 + 400 * (2 - 1)) / 3)

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