Event: Division Four

Opponent Rating Result
Adam GA Draper 1888 0 - 1
Paul B Sharratt 1729 ½ - ½
John Grant 1641 0 - 1
Paul Silverman 1606 0 - 1
Peter JR Oliver 1589 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1371 = (8453 + 400 * (0 - 4)) / 5)

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