George Russell has been named a Mercedes' F1 driver for the 2020 Sakhir Grand Prix, replacing Lewis Hamilton, while Jack Aitken will make his F1 debut with Williams Racing.
The Louisville, Kentucky, native is set to return to the Cup Series and serve as crew chief for the newly formed Trackhouse Racing and veteran Daniel Suarez in 2021.
The 26-year-old Ferguson from Lincolnton, North Carolina, will make his second career Truck start with Kaulig Racing more than a month after making his Truck debut at Bristol.
Spire Motorsports has earned one win and three top five finishes. Rajah Caruth took the checkered flag in last year's Rackley Roofing 200 after leading 61 laps.
In 12 previous NASCAR Cup Series starts at Nashville (Tenn.) Superspeedway, Spire Motorsports has two top-five finishes with a best result of second earned twice by Zane Smith (2024) and Carson Hocevar (2025).