Event: Douglas Championship

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Opponent	Rating	Result
Brian Robert Woodard	1688	½ - ½
Joseph Saunders	1450	1 - 0
Henrik Fabri	2025	½ - ½
Paul Smith	1725	1 - 0
Sanjay Savio Gumireddy	1872	0 - 1
Colin Watkinson	1300	1 - 0

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

1810 = (10060 + 400 * (3 - 1)) / 6)