Event: The Friendly League

Opponent Rating Result
Steven M Flaherty 1605 ½ - ½
Eric Mansfield 1428 1 - 0
Daniel Miller 0 1 - 0
Mike Tanovici 0 1 - 0
William T Jones 880 1 - 0
Ronnie Sutton 936 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1142 = (4849 + 400 * (5 - 0)) / 6)

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