Event: Hillingdon Div 3

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Opponent Rating Result
Praveen Ravichandran 1574 1 - 0
P M Thinal Thulnith 1366 1 - 0
Mary Helen Deans 1664 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1935 = (4604 + 400 * (3 - 0)) / 3)

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