Event: Lincoln Standardplay

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Opponent Rating Result
Jason Golding 1241 0 - 1
Peter G Sherlock 1570 0 - 1
Peter G Sherlock 1575 1 - 0
Jason Golding 1265 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1213 = (5651 + 400 * (1 - 3)) / 4)

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