Event: Division 1

Opponent Rating Result
Ben MacAndrews 1863 1 - 0
Norman A Hutchinson 1939 ½ - ½
Andrew Shephard 1873 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1892 = (5675 + 400 * (1 - 1)) / 3)

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