Event: Division 2

Opponent Rating Result
Andrew E Taylor 1641 0 - 1
Ray Sawyer 1668 1 - 0
Peter M Collins 1647 1 - 0
Stanislaw Wojtas 1796 0 - 1
Andrew E Taylor 1641 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1599 = (8393 + 400 * (2 - 3)) / 5)

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