Event: Division 2

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Opponent	Rating	Result
Cissy Bailey	1299	1 - 0
Michael Houlston	1425	1 - 0
Ethan Lord	0	1 - 0

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

1308 = (2724 + 400 * (3 - 0)) / 3)