Event: Junior Rapidplay

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Opponent	Rating	Result
Patrick Flamman	1337	0 - 1
George Tagg	1351	0 - 1
Niamh Grace	1100	1 - 0

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

1129 = (3788 + 400 * (1 - 2)) / 3)