Event: LADDER

Opponent Rating Result
David Bradley 1372 0 - 1
David Bradley 1372 ½ - ½
Mark Cox 1086 1 - 0
David Bradley 1378 1 - 0
Peter Larwood 1897 ½ - ½
Nicholas H Skinner 1837 0 - 1
Ben Glyn-Jones 1379 ½ - ½
Philip Crompton 1496 1 - 0
Keith Guinness 1627 1 - 0
Ben Glyn-Jones 1400 0 - 1
David Wallis 1619 1 - 0
Mark Cox 1098 1 - 0
Jon Young 1398 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1581 = (18959 + 400 * (7 - 3)) / 13)

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