Event: NSDCA Division 4

Opponent Rating Result
S Ali Arshad 1171 ½ - ½
Martin J Chadwick 1304 0 - 1
Andrew Crosby 1489 1 - 0
Joe Hulme 1250 1 - 0
David S Johnson 1508 0 - 1
Martin J Chadwick 1328 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1408 = (8050 + 400 * (3 - 2)) / 6)

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