Event: Club Championship B

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Opponent	Rating	Result
Daniel Watkins	1124	0 - 1
Samson Ghasemi	1405	0 - 1
Daniel Allen	1305	0 - 1
Jon Hunt	1501	0 - 1
Michael Brian Harrison	1061	1 - 0
Michael J Davies	1317	1 - 0(def)

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

1039 = (6396 + 400 * (1 - 4)) / 5)