Event: Worcestershire Championship League

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Opponent Rating Result
Matt Gillings 0 0 - 1
Peter S Banks 1538 1 - 0
David Close 1731 1 - 0
Stephen V Woodhouse 1790 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1365 = (5059 + 400 * (2 - 1)) / 4)

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