Event: 54th Cotswold Minor

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Opponent	Rating	Result
Rohit Keshari	1598	1 - 0
John H Sleggs	1507	0 - 1
Ben Hughes	1210	1 - 0
Jon Hunt	1454	½ - ½

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

1542 = (5769 + 400 * (2 - 1)) / 4)