Event: NCCA League Division 2

Opponent Rating Result
Mark A Nettleton 1424 1 - 0
Harvey W Collins 1524 ½ - ½
Chris Perkins 1775 0 - 1
John H Lee 1400 1 - 0
Ashley Robinson 1629 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1550 = (7752 + 400 * (2 - 2)) / 5)

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