Event: Division 2

Opponent Rating Result
Bernard A Rogers 1740 ½ - ½
Richard Evans 1614 1 - 0
Warren Archibald 1567 1 - 0
Stephen Rumsby 1585 1 - 0
Harry Myring 1844 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1990 = (8350 + 400 * (4 - 0)) / 5)

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