Event: Hillingdon Div 3

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Opponent	Rating	Result
Richard O'Neill	1548	1 - 0
Hitesh Shah	1060	1 - 0
Rory Jones	1247	1 - 0

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

1685 = (3855 + 400 * (3 - 0)) / 3)