Event: Division 2

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Opponent Rating Result
David A Talbot 1747 ½ - ½
Neil Taylor 1587 0 - 1
Daniel Miller 1496 1 - 0
Neil Taylor 1581 0 - 1
Robert Grounds 1346 ½ - ½
John Moxham 1484 0 - 1
Mark Haydock 1329 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1453 = (10570 + 400 * (2 - 3)) / 7)

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