Event: NSDCA MMS Division 1

Opponent Rating Result
David P Kent 1803 0 - 1
Jon EW Blackburn 1745 1 - 0
Michael A Lee 1668 0 - 1
Caroline L Mountford 1607 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1706 = (6823 + 400 * (2 - 2)) / 4)

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