Event: Division Four

Opponent Rating Result
John Lunn 1564 ½ - ½
Thomas Nash 1485 1 - 0(def)
Des J Green 1106 1 - 0
Eric Horwill 1585 ½ - ½
Philip Press 1372 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1407 = (5627 + 400 * (1 - 1)) / 4)

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