Event: Division Two

Opponent Rating Result
Kyri Weeks 1531 1 - 0
Charles ES Bullock 1927 0 - 1
Derek R Johnson 1936 ½ - ½
David Johnson 1690 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1771 = (7084 + 400 * (1 - 1)) / 4)

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