Event: Division 2

Opponent Rating Result
Graham J Kershaw 1675 1 - 0
Michael J Saunders 1777 ½ - ½
Mustapha Rahaman 1660 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1837 = (5112 + 400 * (1 - 0)) / 3)

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