Event: Division 1

Opponent Rating Result
Alex Bourke 1857 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1857 = (1857 + 400 * (0 - 0)) / 1)

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Opponent Rating Result
M David Rutter 1813 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1413 = (1813 + 400 * (0 - 1)) / 1)