Event: St Andrews Summer Tournament

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Opponent	Rating	Result
Jacob Jackson	1455	½ - ½
Dan Malbon	1300	½ - ½
Darren Tomlinson	1076	0 - 1
Henrik Salbol	1324	0 - 1
David Atkin	1326	0 - 1

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

1056 = (6481 + 400 * (0 - 3)) / 5)