Event: NSDCA Division 3

Opponent Rating Result
Colin Abell 1539 ½ - ½
David P Price 1660 0 - 1
Steve R Hill 1815 0 - 1
David S Johnson 1603 ½ - ½
Tim Twentyman 1702 ½ - ½
Julian P Cook 1388 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1551 = (9707 + 400 * (1 - 2)) / 6)

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