Event: Northamptonshire Silver King League Division 2

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Opponent	Rating	Result
Yugan Suganya	1548	0 - 1
Robert Lepley	1405	0 - 1
Joshua Stojkovic	1365	1 - 0

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

1306 = (4318 + 400 * (1 - 2)) / 3)