Event: Rook 2019-20

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Opponent	Rating	Result
Anthony RJ Higgs	180	½ - ½
James C Mansson	189	½ - ½
Ian S Comley	146	0 - 1

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

38 = (515 + 400 * (0 - 1)) / 3)