Event: Division 2

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Opponent Rating Result
Iain Brodie 1745 ½ - ½
Penny A Wood 1449 ½ - ½
Neil Staples 1815 0 - 1
Bernard A Rogers 1759 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1492 = (6768 + 400 * (0 - 2)) / 4)

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