Event: 4 Board League A

Opponent Rating Result
Jamie Kubisa 1795 0 - 1
David Barlow 2021 0 - 1
Andrew C Wainwright 2018 0 - 1
Ian Jewsbury 1709 ½ - ½
Chris S Edwards 1691 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1687 = (9234 + 400 * (1 - 3)) / 5)

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