Event: Division 2

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Opponent Rating Result
David H Phillips 153 1 - 0
Peter R Bending 121 ½ - ½
Gavin Thomson 98 1 - 0
Stephen Bush 112 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

421 = (484 + 400 * (3 - 0)) / 4)

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