Event: Super League (rapidplay)

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Opponent	Rating	Result
Ian A Robson	1641	0 - 1
Patrick Baker	1780	½ - ½
Nigel Hosken	2129	½ - ½

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

1717 = (5550 + 400 * (0 - 1)) / 3)