Event: Division C

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Opponent	Rating	Result
Cennydd Bowles	1509	1 - 0
Ryan Colclough	1624	0 - 1
Steven Klein	1517	1 - 0

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

1683 = (4650 + 400 * (2 - 1)) / 3)