One can see that σ values – the uncertainty in the skill for each player – is lower after the match, substantially more so for the players on the 4th and 5th rank (Darren and Eve) Those two players have the property that they are “bracketed” by a maximal number of players in terms of defeat: They were defeated by 3 (or 4) players and they defeated 4 (or 3) other players. In contrast, the first pla
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