Event: Two West

Opponent Rating Result
Sam Lazarus 0 ½ - ½
David C Helsby 1810 ½ - ½
Malcolm Dancy 1780 1 - 0
Noel M Stewart 1645 0 - 1
Andrew D Craig 1773 0 - 1
Geoffrey L Bishop 1735 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1457 = (8743 + 400 * (2 - 2)) / 6)

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