Event: Division 2

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Opponent Rating Result
Ian Gaskin 1583 0 - 1
Ric Woodcock 1485 0 - 1
Mark Fail 0 ½ - ½
Alex Jamieson 1464 1 - 0
Ian Craig 1400 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1186 = (5932 + 400 * (2 - 2)) / 5)

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