Event: Ringwood Rapidplay Open

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Opponent	Rating	Result
Grzegorz S Sawicki	2000	0 - 1
Matthew Deacon	1584	0 - 1
Thomas R Anderson	1672	½ - ½
Richard V Puchades	1896	1 - 0
Mark Littleton	2012	1 - 0
David J Deacon	1915	½ - ½

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

1847 = (11079 + 400 * (2 - 2)) / 6)