Event: 400 League

Opponent Rating Result
Anthony G Steele 118 0 - 1
Robert Black 80 0 - 1
Robert Black 80 ½ - ½
Mick Wombell 80 0 - 1
Robert Black 126 0 - 1
Anthony G Steele 118 ½ - ½
Mick Wombell 80 ½ - ½
Philip Dexter 80 1 - 0
Mick Turnidge 80 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

5 = (842 + 400 * (2 - 4)) / 9)

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