Event: Division 2

Opponent Rating Result
Mariusz Waszkielewicz 1550 ½ - ½
Paul H Kenning 1834 0 - 1
Michael Mason 1750 ½ - ½
Fred Collins 1500 1 - 0
Venkatesh Subramanian 1801 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1607 = (8435 + 400 * (1 - 2)) / 5)

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