Event: Division 2

Opponent Rating Result
David Harrington 1550 1 - 0
Mark Oakden 1583 1 - 0
Idowu Afinowi 1600 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1978 = (4733 + 400 * (3 - 0)) / 3)

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