Event: Club Championship Div 1

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Opponent	Rating	Result
Martin J Burns	1910	0 - 1
Neville Layhe	1620	1 - 0
Harry Gardiner	1935	0 - 1

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

1688 = (5465 + 400 * (1 - 2)) / 3)