The five drivers previously mentioned are far from the only drivers from lower-tier NASCAR series to have shown the potential to excel in the highest levels of NASCAR.
Here's a shout-out to several others who I believe could have Sprint Cup wins in their racing future.
Justin Allgaier was the only Nationwide regular to win a race in 2010, and he added a second career NW victory to his resume this season at Chicago. At 25, Allgaier is itching to finally get a shot at Cup.
Brian Scott has shown great promise as an up-and-coming driver in the Gibbs stable. If Joey Logano struggles for another season or two, don't be surprised if Coach Gibbs tabs Scott to take over the No. 20 ride.
Cole Whitt is a young Red Bull driver in the truck series. That team's future is very much in doubt, but the talented Whitt will undoubtedly receive a top-flight ride next year in some capacity. I expect him to move up the NASCAR ranks steadily over the next few seasons.
Finally, Ryan Truex, younger brother of Sprint Cup driver Martin Truex, Jr., has shown flashes of potential in the Nationwide Series after dominating the K&N Pro East competition for the last couple of years. Both talent and name recognition will assist Truex in his journey to the Sprint Cup level.