Event: Watkinsons League

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Opponent	Rating	Result
Steve Crow	1574	1 - 0
William Peacock	1630	1 - 0
Mark Rojinsky	1462	1 - 0

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

1955 = (4666 + 400 * (3 - 0)) / 3)