Event: WDCL Division 2

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Opponent	Rating	Result
Peter Hamill-Stewart	1540	1 - 0
Kade Shaw	0	1 - 0
Nigel Holland	1540	0 - 1
Anthony Wells	1413	0 - 1
Aidan Berry	1180	0 - 1
Bernard Bedworth	1480	1 - 0
David Tomkins	1510	0 - 1
John Rimmer	1100	1 - 0

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

1220 = (9763 + 400 * (4 - 4)) / 8)