Event: NCCA League Division 3

Opponent Rating Result
Keith Bradley 1639 1 - 0
Luca Emmerson 1573 1 - 0
Michael J Gibbons 1923 ½ - ½
Crumpton Clarke 1561 0 - 1
David M Owen 1723 0 - 1
Luca Emmerson 1558 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1596 = (9977 + 400 * (2 - 3)) / 6)

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