Event: Roger Goldsmith Div 2

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Opponent	Rating	Result
Mark Webb	1453	0 - 1
Zach Galloway	1100	0 - 1
Peter Jones	1200	½ - ½

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

984 = (3753 + 400 * (0 - 2)) / 3)