Event: City Chess League 2018-19

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Opponent	Rating	Result
Vikhram Ravi	0	0 - 1
Nick W Faulks	0	0 - 1
David A Morgan	0	1 - 0
David A Tidmarsh	0	½ - ½
D Ian W Reynolds	0	0 - 1

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

-160 = (0 + 400 * (1 - 3)) / 5)