Whether you're a weekly watcher or a casual Cup fan, this guide will get you up to speed on the drivers in the bracket.

The seeding is done, the bracket is set and the drivers are ready. All that‘s left now is for the inaugural NASCAR In-Season Challenge to hit the track, beginning this weekend at EchoPark Speedway (formerly known as Atlanta Motor Speedway) -- introducing a fascinating new dynamic into the summer stretch of the Cup Series schedule.