Event: Division 2

Opponent Rating Result
Rob Hearne 1942 0 - 1
Richard Garrett 2024 ½ - ½
Richard J Johnson 1881 ½ - ½
Andrew Penn 1776 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1906 = (7623 + 400 * (1 - 1)) / 4)

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