Event: Division 3

Opponent Rating Result
Des J Green 1113 1 - 0
David I Buckley 1218 ½ - ½
Stephen Luff 1150 0 - 1
Ian Boddington 1150 0 - 1
Keith Milner 1150 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1156 = (5781 + 400 * (2 - 2)) / 5)

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