Event: Division B

Opponent Rating Result
Peter Dickinson 1538 0 - 1
Peter Dickinson 1538 ½ - ½
Steve G Hughes 1495 0 - 1
Con Carey 1567 ½ - ½
Darren Hillary 1450 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1438 = (7588 + 400 * (1 - 2)) / 5)

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