How to compare Kentucky Speedway's passing grade Saturday night

  Sprint Cup Series drivers were overwhelmingly supportive of the new aerodynamic rules package that debuted in Saturday night's Quaker State 400 at Kentucky Speedway.

   In addition to the glowing comments, however, NASCAR had a significant amount of recent data from which to compare that backed up the positive comments. 

   Here's a look at how Kentucky has fared in the passing game since its Cup series debut:

   Track History - Green Flag Passes

   Race Date            Total          

   7/11/2015            2,665              

   6/28/2014            1,147      

   6/30/2013            1,650      

   6/30/2012            1,849      

   7/9/2011              3,216      

   Track History - Green Flag Pass for Lead

   Race Date            Total          

   7/11/2015            22          

   6/28/2014            12          

   6/30/2013            6             

   6/30/2012            9             

   7/9/2011              19