Event: Derby & District Division 1

Opponent Rating Result
D Martin Howard 1965 ½ - ½
Alan F Downham 1848 ½ - ½
Ranjit Nath 1743 ½ - ½
Shun Washiya 1736 1 - 0
Michael J Alderson 1973 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1933 = (9265 + 400 * (1 - 0)) / 5)

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