Atlanta Motor Speedway rarely gives Cup Series racers an easy ride. The 1.54-mile course can prove challenging, particularly for those facing the effects of dirty air. Last season's spring race at the venue,

Here is the Racing America On SI live race updates page for the Quaker State 400 at EchoPark Speedway. The post will be updated throughout Saturday's race with key updates, video highlights, race results and in-season tournament matchup updates.