Erik Jones, Daniel Suarez and Elliott Sadler are guaranteed spots in the NASCAR Xfinity Chase as long as they start each of the next nine races.

The rest of the series contenders need at least one win to ensure a playoff berth, which is why Saturday's stand-alone race in Iowa is big for all of them.

Brad Keselowski is the only Sprint Cup regular in the field, so there might not be a better chance for a winless Xfinity driver to grab a victory that would all but lock up a Chase bid.

There are nine Xfinity drivers who would earn a playoff spot with a win at Iowa Speedway.