Event: Open

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Opponent	Rating	Result
Marek J Soszynski	149	½ - ½
Ian Emery	173	0 - 1
Irvin B Ortega	209	½ - ½
Nathanael Paul	185	0 - 1
Matthew J Harborne	185	½ - ½
Nigel K Hosken	189	0 - 1
Jonathan Dale	161	½ - ½
Jonathan E Swindells	214	0 - 1
Marek J Soszynski	149	0 - 1
Ian Emery	173	0 - 1
Irvin B Ortega	209	0 - 1
Nathanael Paul	185	0 - 1
Matthew J Harborne	185	0 - 1
Nigel K Hosken	189	0 - 1
Jonathan Dale	161	1 - 0
Jonathan E Swindells	214	0 - 1

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

-67 = (2930 + 400 * (1 - 11)) / 16)