Event: OTB Blitz Championship

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Opponent	Rating	Result
Paul R Barclay	1810	0 - 1
Aradhya Mukherjee	1502	1 - 0
Vittorio Nigrelli	1776	0 - 1
James Walsh	1300	1 - 0
Jay Sharman	1655	1 - 0
Mark RA Murrell	1863	0 - 1
Tu Senan	1578	½ - ½

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

1641 = (11484 + 400 * (3 - 3)) / 7)