Event: Les Bell Cup

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Opponent	Rating	Result
Stephen Livermore	1746
Matthew Taylor	1709
Andrew S Pandian	1605
Chris Jones	1615	1 - 0(def)
Matthew J Morter	1603	0 - 1
Graham R Jones	1534	0 - 1
Stephen F Crane	1427	0 - 1

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

1121 = (4564 + 400 * (0 - 3)) / 3)