Event: Division 5

Opponent Rating Result
Robert Garnett 1601 0 - 1
Roger Southward 1152 1 - 0
Christopher Cumbers 1410 ½ - ½
Richard Dyce 1478 0 - 1
Robert Garnett 1601 ½ - ½
Ben Poulteney 1150 0 - 1
Ronald Watson 1399 0 - 1
Simon Parham 1238 0 - 1
David C Dunne 1475 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1212 = (12504 + 400 * (1 - 5)) / 9)

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