Event: SCCA Division 1 19/20

Opponent Rating Result
James Pack 159 1 - 0
Angus Irving 136 1 - 0
Ed Kirkham 146 ½ - ½
Alonso Paez 129 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

443 = (570 + 400 * (3 - 0)) / 4)

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