Event: NSDCA Division 3

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Opponent Rating Result
Peter R Tideswell 1200 1 - 0
Martyn Stanley 1230 1 - 0
Charlie G Swinson 1448 0 - 1
David M Rose 1535 1 - 0
Timothy Weston 1328 1 - 0
Steve Ballantyne 1365 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1484 = (8106 + 400 * (4 - 2)) / 6)

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