Event: NSDCA Division 2

Opponent Rating Result
Roger J Edwards 1635 1 - 0
Nigel Gardner 1499 0 - 1
Alberto Gissi 1630 ½ - ½
Andrew Mowat 1771 0 - 1
Lukasz Michalek 1630 0 - 1
Neill Harvey-Smith 1699 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1511 = (9864 + 400 * (1 - 3)) / 6)

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