Event: Division Four

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Opponent Rating Result
Steve Alcock 1473 ½ - ½
Lennie Johnson 1556 ½ - ½
Sheila Robinson 1430 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1353 = (4459 + 400 * (0 - 1)) / 3)

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