"As both a team owner and a driver in the NASCAR Sprint Cup Series, I have immense respect for the enforcement policies NASCAR has in place. In my case, I believe that the combination of a prescribed medicine and an over the counter medicine reacted together and resulted in a positive drug test. My Doctor and I are working with both Dr. Black and NASCAR to resolve this matter.
"Mayfield Motorsports remains committed to the NASCAR Sprint Cup Series and the organization will announce an interim owner and a temporary replacement driver early next week. Those roles will commence immediately beginning with next week's Sprint Open and continuing through Charlotte and beyond."