Here are two oddities in calculated playing levels.
In the ladder I play on, one person (A.V.) has only played one match, which was also the first match of his opponent (R.B.). Both of them rated themselves 4.5 initially, but after the match A.V.'s rating was 4.70. This seems like way too big a jump, especially since R.B. subsequently lost to a 4.24 player, after which R.B.'s rating dropped to 4.06 -- so in the end A.V. got a 4.70 rating just by beating a 4.06 player, which doesn't make sense.
Also there are two people on my ladder, J.B. and S.T., both of whom rated themselves 4.0 when they started a previous ladder. Their cumulative records are 20-14 and 0-10, which makes it surprising that their ratings are 3.68 and 3.61. Part of the problem is that the playing level accuracy resets to zero at the start of every new ladder, even though the playing level itself gets carried over from one ladder to the next. This seems strange.
Last Edit: 11 months 3 weeks ago by Michael Zieve. Reason: Noticed something new
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