Event: Camborne club U1600 2022/23

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Opponent	Rating	Result
Philip J Spargo	1422	0 - 1
Annabella Ongley	1157	1 - 0

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

1290 = (2579 + 400 * (1 - 1)) / 2)