Event: Division 3

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Opponent Rating Result
Sergejs Starodubcevs 1609 0 - 1
John WF McAllister 1627 0 - 1
Rowan Kent 1706 ½ - ½
M Ellingham 1200 1 - 0
Simon Riley 1714 ½ - ½
Sergejs Starodubcevs 1591 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1575 = (9447 + 400 * (2 - 2)) / 6)

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