Event: Division 4

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Opponent Rating Result
Duc Loc Nguyen 0 0 - 1
Nigel Bowler 0 ½ - ½
Leo Beacroft 1455 1 - 0
Michael James 922 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

694 = (2377 + 400 * (2 - 1)) / 4)

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