Event: MID En Passant Cup

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Opponent	Rating	Result
Mark D Brougham	1885	0 - 1
Lasitha Yasanga Herath	1800	0 - 1
Alan E Riddoch	1759	1 - 0
Robert G Thompson	1600	1 - 0
Adrian Cload	1678	0 - 1
William Walshe	1504	½ - ½

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

1638 = (10226 + 400 * (2 - 3)) / 6)