Event: Internal Games

Opponent Rating Result
Mike J Coughtrey 1442 0 - 1
Nigel S Lake 1399 0 - 1
Nigel S Lake 1399 0 - 1
Nigel S Lake 1438 0 - 1
Nigel S Lake 1438 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1183 = (7116 + 400 * (1 - 4)) / 5)

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