Event: 54th Cotswold Major

Opponent Rating Result
Brendan O'Gorman 1740 0 - 1
Kevin Winter 1702 0 - 1
John A Williams 1608 ½ - ½
Nick D Holmes 1531 ½ - ½
Malcolm A Probert 1512 1 - 0
Stephen Tatlow 1694 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1498 = (9787 + 400 * (1 - 3)) / 6)

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