Event: 4-Board Division 2

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Opponent	Rating	Result
Andrew Donegan	1411	1 - 0
Chris J Matthews	1822	1 - 0
Andrew Donegan	1335	0(def) - 1

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

2017 = (3233 + 400 * (2 - 0)) / 2)