Event: Summer League Section 1

Opponent Rating Result
John Thackray 1953 0 - 1
Shaun J Culkin 1983 0 - 1
Mark I Collinson 2005 0 - 1
Joe Varley 1830 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1543 = (7771 + 400 * (0 - 4)) / 4)

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