Event: Hillingdon Div 2

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Opponent Rating Result
Cristian Delendrea 1544 0 - 1
Peter R Lord 1767 0 - 1
Alex Lushpa 1660 ½ - ½
Alexander Horwood 1327 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1475 = (6298 + 400 * (1 - 2)) / 4)

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