Original: However, over the last several years, a number of Sprint Cup drivers have run both the Nationwide and Sprint Cup series events each weekend, using the Nationwide race as a warm-up to the Cup event at the same facility. Detractors of this practice believe this gives the Sprint Cup teams an unfair advantage, and that the presence of the Sprint Cup drivers squeezes out Nationwide Series competitors who would otherwise be able to qualify.
Simplified: Drivers who wish to drive in the Sprint Cup often race here first.