Event: York Club Championship

Opponent Rating Result
Norman G Andrews 1585 1 - 0
Paul W Jones 1656 ½ - ½
A Jon Griffith 1780 ½ - ½
Herbert Lockwood 1612 ½ - ½
Derek Toyne 1595 0(def) - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1758 = (6633 + 400 * (1 - 0)) / 4)

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