NASCAR DFS: AAA Texas 500 DraftKings PreviewGet ready to cash in at DraftKings this weekend with NASCAR expert Brian Polking's DFS Preview for the AAA Texas 500 at Texas Motor Speedway. November 1, 2018 Brian Polking DFS - All Sports, DFS - FullTime DFS, DFS - NASCAR Get ready to cash in at DraftKings this weekend with NASCAR expert Brian Polking's DFS Preview for the AAA Texas 500 at Texas Motor Speedway. To continue reading this article, you must have an active subscription to one of the Products listed below. Click Here to subscribe to FullTime Fantasy Click here to subscribe to FullTime DFS If you have an active subscription, please log in AAA Texas 500DraftKings NASCARFantasy NASCARKevin HarvickMartin Truex Jr.NASCAR DFSTexas Motor Speedway