Event: Division 1

Opponent Rating Result
Oliver J Lenton 1975 0 - 1
Norman A Hutchinson 1948 1 - 0
James A Briginshaw 1768 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

2030 = (5691 + 400 * (2 - 1)) / 3)

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