Event: Roger Goldsmith Div 2

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Opponent	Rating	Result
Linhao Sha	1400	0 - 1
Stephen Spurgeon	1500	0 - 1
Daniel Pugh	1669	0 - 1

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

1123 = (4569 + 400 * (0 - 3)) / 3)