There will be 37 Cup cars and 39 Xfinity cars competing in this historic event at Mexico City. The Xfinity field, which is usually capped at 38 grid spots, has been expanded to 40 for this event only. As a result, everyone on the entry list will get to compete in the big show.
The Cup field includes the usual field of 36 with all of the expected full-time drivers, and just one open entry. That will be No. 78 Live Fast Motorsports Chevrolet with Katherine Legge behind the wheel.
