Event: Walker Shield

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Opponent Rating Result
Charles EASTON 1451 0 - 1
Harrison Pitchford 1411 0 - 1
Sean Duffy 1338 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1000 = (4200 + 400 * (0 - 3)) / 3)

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