With three weeks remaining before this season is in the record books, the pieces of the 2010 roster puzzle are coming together.

There will be plenty of displaced drivers after Homestead and not many vacant seats. The musical chairs have already started, but who will have rides when the transporters roll into Daytona in February?

Let's take a look at who is out after the 2009 season and what their prospects are for next year.

Sprint Cup

David Stremme — As FOXSports.com first reported, the affable Stremme, 32, has been replaced by Brad Keselowski to give the newcomer a head start on 2010 with the No. 12 Penske team. In an ironic twist, Stremme will drive the No. 09 Chevrolet for Phoenix Racing at Homestead — a race Keselowski had signed on to do. Stremme, who was 31st in points at the time of his departure, has two options to consider. One, return to the Nationwide Series and drive for Rusty Wallace (who Stremme accompanied to Las Vegas earlier this week) and/or drive for the Bob Jenkins' owned Front Row Motorsports.

Reed Sorenson — Through process of elimination, Sorenson is the odd man out in the Richard Petty Motorsports/Yates Racing merger. Sorenson, 23, has been offered the No. 32 Nationwide Series Braun Racing car. However, he will have to share the ride for nine races with Brian Vickers. Sorenson will pilot the No. 10 car in order to run the full season. Sorenson, who is currently 28th in the point standings, is also on the short list for Phoenix Racing.

Casey Mears — With Jack Daniels' decision to discontinue its sponsorship, Richard Childress Racing is weighing its options for the No. 07 car in 2010, including shinking to three cars. That leaves Mears' status in limbo. Mears, 31, showed improvement under the direction of crew chief Todd Berrier, who has since been reassigned to the No. 31 Caterpillar Chevrolet with Jeff Burton.