Résultats du segment 1 de l'événement Hollywood Casino 400 2021
24 octobre
Kansas - Kansas City
Kansas Speedway 2,41 km (1,50 mi)
| P | # | Pilote | Propriétaire | Moteur | Tours | Points |
| 1 | 5 | Kyle Larson | Hendrick Motorsports | Chevrolet | 80 | 10 |
| 2 | 24 | William Byron | Hendrick Motorsports | Chevrolet | 80 | 9 |
| 3 | 9 | Chase Elliott | Hendrick Motorsports | Chevrolet | 80 | 8 |
| 4 | 1 | Kurt Busch | Chip Ganassi Racing | Chevrolet | 80 | 7 |
| 5 | 11 | Denny Hamlin | Joe Gibbs Racing | Toyota | 80 | 6 |
| 6 | 4 | Kevin Harvick | Stewart-Haas Racing | Ford | 80 | 5 |
| 7 | 48 | Alexander Bowman | Hendrick Motorsports | Chevrolet | 80 | 4 |
| 8 | 42 | Ross L. Chastain | Chip Ganassi Racing | Chevrolet | 80 | 3 |
| 9 | 18 | Kyle Busch | Joe Gibbs Racing | Toyota | 80 | 2 |
| 10 | 8 | Tyler Reddick | Richard Childress Racing | Chevrolet | 80 | 1 |