Event: 53rd Cotswold Major

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Opponent	Rating	Result
Arun Broadley	1707	0 - 1
Robert Lacey	1491	0 - 1
James R Shore	1749	1 - 0
Jacob Liu	1696	1 - 0
Zack Norris	1659	½ - ½

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

1660 = (8302 + 400 * (2 - 2)) / 5)