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This is for the most improved players over the last 12 months and the players included can be controlled by the search filters. Also note that players need to have a minimum level of 500 12 months ago and need to have played enough to have good confidence in their level.
This can either be the most improved player for last month - which is for the duration of the whole month, of the most improved player for this month - from the start of this month up to today.
To qualify for the player of the month, players must have a level higher than 200, have played at least 5 matches in the previous 12 months and have a level confidence of more than 40% before the start of the month.
This compares the player's level at the start of the tournament with their level now, or at the end of the tournament. The rankings show the players wth the most improvement at the top.
This looks at the level change for every individual result and ranks all the players in the tournament by that. This means that any player can go straight to the top with any result!
Bijan Rafii's level has a low confidence value (<20%). Every level has a calculated level confidence which is how confident we are that their level is accurate. It goes up as more results are received and down if they haven't played for a while or if their results have been unexpected.
If a player's level confidence is low (in comparison to their opponent) then their level will change more quickly as their results come in. This allows an inaccurate level to be corrected quickly and also for us to keep up with rapidly improving juniors (or seniors for that matter!).
