The Chase field has been whittled down to eight.

Dale Earnhardt, Jr. fell just one spot short of winning at Talladega to move on.  Denny Hamlin saw a secure spot fade to nothing thanks to an out-of-control roof flap.  Matt Kenseth will recall contact with Joey Logano at Kansas as the catalyst that ended a dominant day and a shot a win for advancement.  And, Ryan Newman, he'll review a race-ending action by Kevin Harvick that kept the reigning champ in and Newman out on points.

They're done.  Sayonara!

The eight contenders remaining are Joey Logano, Carl Edwards, Jeff Gordon, Kurt Busch, Brad Keselowski, Martin Truex Jr., Kevin Harvick, and Kyle Busch.

Here's a look at whose Martinsville performances could define their Chase hopes:

Green Flag - Joey Logano

He swept the last round of the Chase and is proving to be the car to beat each week.  He's never won at Martinsville, but his last three races at that track have ended in top-five finishes, so this could be the race that he finally wins the Grandfather clock.

Yellow Flag - Jeff Gordon

His final regular season was nothing noteworthy, but Gordon has gotten much more consistent in the Chase.  He has four top-10s in six races with his other two finishes being a 12th and a 14th.  He has eight wins at Martinsville, and while he hasn't had the speed this season to suggest he's a race favorite, his past success at the track could lead to a breakthrough.

Red Flag - Kurt Busch

The stats are simple.  Busch has five top-10s in 30 starts at Martinsville.  He won at that track in the spring of 2014, so that's pretty fresh in the brain, but it's his only top-10 in his last 19 races at the track.  That's almost unfathomable.