USCF Blitz Rating in Effect
March 2, 2013
As of March 1, 2013, the USCF has a Blitz rating system! Events that start on or after March 1, 2013, and that have a total time per player of between 5 and 10 minutes are now automatically part of the Blitz rating system.

Add the minutes of time plus the seconds of delay/increment to determine the total time per player.

For Blitz events, the fastest available time control is G/3;d2 (Game in 3 minutes with 2 seconds of delay) and the slowest available time control is G/10;d0 (Game in 10 minutes with no increment or delay.)

All rounds and games in a Blitz event must use the same time control. If an event would have previously qualified as a Quick-Rated-Only event but is within the 5 to 10 minute range for Blitz events, it will be a Blitz event.

For more information, see the Update to the USCF rulebook.