Event: SCCA Division 3 Rapidplay Cup

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Opponent	Rating	Result
Raf Calumpiano	1180	0 - 1
Raf Calumpiano	1180	1 - 0
Piotr Dolewka	1546	0 - 1
Piotr Dolewka	1546	0 - 1

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

1163 = (5452 + 400 * (1 - 3)) / 4)