Event: Max 560

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Opponent	Rating	Result
Peter S Banks	109	½ - ½
Ionut Florin Valea	121	1 - 0
Christopher J Evans	133	½ - ½
Joe Dodgson	130	1 - 0
Arthur F Kent	126	1 - 0
Jon A Asbury	121	1 - 0
Peter S Banks	109	1 - 0
Ionut Florin Valea	121	1 - 0
Christopher J Evans	133	1 - 0
Joe Dodgson	130	½ - ½
Arthur F Kent	126	1 - 0
Jon A Asbury	121	½ - ½

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

390 = (1480 + 400 * (8 - 0)) / 12)