Event: Mini League

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Opponent Rating Result
Steven Hodgson 1320 0 - 1
John Wheatley 1450 1 - 0
Peter Galloway 1459 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1543 = (4229 + 400 * (2 - 1)) / 3)

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