Event: HDCA Summer League Section 1

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Opponent	Rating	Result
Richard O Callis	139	1 - 0
Andrew D Bettley	153	1 - 0
Keith Thompson	163	½ - ½

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

418 = (455 + 400 * (2 - 0)) / 3)