Event: Division 2

Opponent Rating Result
Colin R Ramage 1900 1 - 0
Tom A Barton 1935 ½ - ½
Barry S Sheppard 1810 1 - 0
Stephen Coughlan 1975 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

2005 = (7620 + 400 * (2 - 1)) / 4)

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