Hamlin will drive at Texas; Herring will drive at Phoenix and Homestead
Pole sitter Drew Herring spins to bring out first caution at Iowa Speedway.
Drew Herring is done for the night after hard contact with the backstretch wall.
Kevin Swindell crashes into the Turn 3 wall after contact with Drew Herring .
Denny Hamlin says back feels a lot better and Drew Herring has a bright future with JGR.
Technology Countdown: Aerodynamics
Kyle Busch returns as only three-time event winner
Blake Shelton's moving speech, Martin Truex Jr.'s Skype drop-in among top moments
Sport Clips to serve as primary sponsor for nine NASCAR national series events with JGR