Event: 5th Simon Bartlett Memorial Open

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Opponent	Rating	Result
Paul A Aston	1850	1 - 0
Chris R Beaumont	2240	½ - ½
Keith C Arkell	2443	0 - 1
Max Walker	2065	1 - 0
Jack Liu	2170	½ - ½

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

2234 = (10768 + 400 * (2 - 1)) / 5)