Event: LTKO

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Opponent	Rating	Result
Paul May	1857	½ - ½
AJ (Tony) Slinger	0	½ - ½
Simon D Arnold	1855	1 - 0

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

1371 = (3712 + 400 * (1 - 0)) / 3)