Event: Derbyshire Individual

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Opponent	Rating	Result
Maurice J Hill	150	1 - 0
Edward T Bromilow	156	0 - 1
Colin Ross	117	1 - 0
Jaime Castro	151	½ - ½
David G Levens	154	1 - 0

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

306 = (728 + 400 * (3 - 1)) / 5)