Event: Minor Counties

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Opponent	Rating	Result
Gary Kenworthy	2101	1 - 0
Hugo Fowler	2089	0 - 1
Matthew J Payne	2143	0 - 1

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

1978 = (6333 + 400 * (1 - 2)) / 3)