Event: Division 4

Opponent Rating Result
Graham J Gibson 1592 0 - 1
Richard Dyce 1473 0 - 1
Timothy Lee 1255 0 - 1
Ronald Watson 1387 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1027 = (5707 + 400 * (0 - 4)) / 4)

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