Event: 53rd Cotswold Major

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Opponent	Rating	Result
Max Dooley	1826	0 - 1
Judd Chidwick	1759	½ - ½
Thomas Merchant	1503	0 - 1
James R Shore	1749	0 - 1

performance = (sum(opponents ratings) + 400(wins-losses)) / games

1409 = (6837 + 400 * (0 - 3)) / 4)