Event: League Division 2

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Opponent	Rating	Result
Jon Jordan	1620	0 - 1
Stephen Forbes	1492	1 - 0
Rob Lockwood	1615	0 - 1
Richard Higham	1600	1 - 0
Joey Fell	1381	1 - 0
James A Sidley	0	0 - 1
Stephen Firth	1668	0 - 1
Rahul Doshi	1425	0 - 1
Neil Griffiths	1657	0 - 1
Stephen Firth	1668	0 - 1

performance = (sum(opponents ratings) + 400(wins-losses)) / games

1253 = (14126 + 400 * (3 - 7)) / 10)