Event: Division Four

Opponent Rating Result
Adam GA Draper 1863 0 - 1
Paul B Sharratt 1741 0 - 1
Christopher J Evans 1707 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1370 = (5311 + 400 * (0 - 3)) / 3)

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