By Tom Bowles Our daily fantasy (DFS) NASCAR expert gives the best lineup picks for DraftKings success with the Cup Series’ South Point 400 at Las Vegas Motor Speedway as the Round of 8 debuts in Sin City. The Round of 8 begins in the NASCAR Cup Series this weekend at Las Vegas Motor Speedway. Which drivers should you gamble on in your daily fantasy NASCAR DraftKings lineup? Let Joy Tomlinson of Frontstretch.com get you ready for the South Point 400, airing Sunday at 2:30 p.m. ET on NBC. Teams are hoping for some “normal” races in this round of the playoffs after enduring a crash-filled event …