Event: Durham League Division B

Opponent Rating Result
Bryan D Harkness 2040 ½ - ½
Philip Brooks 1581 1 - 0
Theo Jenkins 1781 0 - 1
Ralph Taylor 0 ½ - ½
Stephen Rodgers 0 0 - 1
Peter Harker 1672 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1112 = (7074 + 400 * (1 - 2)) / 6)

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