Event: Division 2

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Opponent	Rating	Result
Karl Barnsley	1003	1 - 0
Marwan Al-abab	0	1 - 0
Ronnie Sutton	977	0 - 1

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

793 = (1980 + 400 * (2 - 1)) / 3)