Event: Cambs Division 2

Opponent Rating Result
Andrew Rankine 1513 0 - 1
Gideon Pearl 0 0 - 1
Isaac Goodwin 1380 1 - 0
Alan Brookbanks 1530 0 - 1
Michael Hellewell 1160 ½ - ½
Michael Hellewell 1160 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1057 = (6743 + 400 * (2 - 3)) / 6)

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