Event: Morpeth Xmas Rapidplay

Opponent Rating Result
Alan Welsh 1788 0 - 1
Robert PC Mitcheson 1729 0 - 1
Chris Hayfield 0 1 - 0
Ian Baulch-Jones 1334 0 - 1
Mick J Renshaw 1498 1 - 0
Martin Seeber 1712 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1210 = (8061 + 400 * (2 - 4)) / 6)

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