Event: Division 2

Opponent Rating Result
Ewen Miller 1831 ½ - ½
Norman G Andrews 1495 ½ - ½
Eric J Brodie 1787 0 - 1
Simon Dixon 1740 ½ - ½
Nimrod Nagy 0 ½ - ½
Herbert Lockwood 1684 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1423 = (8537 + 400 * (1 - 1)) / 6)

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