Event: Division 1

Opponent Rating Result
Richard J E McNally 2005 1 - 0
Richard J E McNally 2030 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

2418 = (4035 + 400 * (2 - 0)) / 2)

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Opponent Rating Result
Bernard J Charnley 1919 ½ - ½
Julian H Summerfield 1838 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

2079 = (3757 + 400 * (1 - 0)) / 2)