Event: Walker Shield

Opponent Rating Result
Don Richards 1381 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

981 = (1381 + 400 * (0 - 1)) / 1)

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Opponent Rating Result
Teddy Horsford 1000 1 - 0
Leo Nauta 1000 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1400 = (2000 + 400 * (2 - 0)) / 2)