This player, US Chess, recently played in his first OTB blitz tournament. He played 10 games in that blitz event and his post event blitz rating says its based on 10 games. However, he already had a OTB regular rating of 1267 so shouldn’t his post event OTB blitz rating be based on at least 11 games since the rating system document says that a pre-event rating that is initialized from another US Chess rating “will always be at least 1”.
Corollary question. I came across a player with a well established FIDE rating. She has played in one US Chess rated event, playing 5 games. Her rating shows as xxxx/10. On the crosstable, it showed her with a beginning rating of — and that ending rating based on 10 games. Do we use only 5 games to initialize from other rating systems? I know when I played in my first blitz event it started me with 10 games at my classical rating.
If the FIDE rating is 2000 or higher, the game count is 10, otherwise it is 5. But you didn’t give the player info so I can’t verify anything.
The maximum count for other ratings system are given on page 4 of the ratings system document in the section on blending ratings.
There appears to be a problem with finding events in the historical data or manual corrections table if they have not played in any events since 2001 This is being looked into.
For the situation I gave, the player was below 2000 so the five games they used is consistent. Thanks.