Event: Derby & District Division 2

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Opponent Rating Result
John S Keaveney 1950 0 - 1
Shun Washiya 1735 ½ - ½
John D Hoddy 1784 0 - 1
Talakalukoppa Amarnath 1591 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1465 = (7060 + 400 * (0 - 3)) / 4)

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