Event: Goodall Cup

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Opponent	Rating	Result
Steven Blay	1386
Manoj Natarajan	1922
David Clifford	818
Trefor H Owens	1999
Robert Cronin	1464
Fredy Reber	1191
Andy Flood	1617
Karl Searles	1300
Jasper Jeffs	1751
Bayley Simpson	1259
Mike Jenkinson	1306
Paul Verrall	1430
Samuel Marsden	2012
Masha Visel	1263
David Marsden	1432

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

0 = (0 + 400 * (0 - 0)) / 0)