2017 Ford EcoBoost 300
The 2017 Ford EcoBoost 300 was the 33rd and final stock car race of the 2017 NASCAR Xfinity Series season, the Championship 4 race, and the 23rd iteration of the event. The race was held on Saturday, November 18, 2017, in Homestead, Florida at Homestead–Miami Speedway, a permanent oval-shaped racetrack. The race took the scheduled 134 laps to complete. At race's end, Cole Custer, driving for Stewart–Haas Racing, would dominate the race to take his first career NASCAR Xfinity Series victory and his only victory of the season.
Meanwhile, third-place finisher, JR Motorsports driver William Byron would win his only NASCAR Xfinity Series championship after battling with teammate Elliott Sadler, passing Sadler with nine to go using the car of Ryan Preece to pass Sadler for the championship.
Background
Championship drivers
- Justin Allgaier advanced by virtue of points.
- William Byron advanced by winning the 2017 Ticket Galaxy 200.
- Daniel Hemric advanced by virtue of points.
- Elliott Sadler advanced by virtue of points.
Entry list
Practice
First practice
The first practice session was held on Friday, November 17, at 2:30 PM EST. The session would last for 55 minutes. Tyler Reddick, driving for Chip Ganassi Racing, would set the fastest time in the session, with a lap of 32.609 and an average speed of.Second and final practice
The final practice session, sometimes known as Happy Hour, was held on Friday, November 17, at 5:00 PM EST. The session would last for 55 minutes. William Byron, driving for JR Motorsports, would set the fastest time in the session, with a lap of 32.513 and an average speed of.Qualifying
Qualifying was held on Saturday, November 11, at 11:15 AM EST. Since Homestead–Miami Speedway is under in length, the qualifying system was a multi-car system that included three rounds. The first round was 15 minutes, where every driver would be able to set a lap within the 15 minutes. Then, the second round would consist of the fastest 24 cars in Round 1, and drivers would have 10 minutes to set a lap. Round 3 consisted of the fastest 12 drivers from Round 2, and the drivers would have 5 minutes to set a time. Whoever was fastest in Round 3 would win the pole.Tyler Reddick, driving for Chip Ganassi Racing, would win the pole after setting a time of 32.604 and an average speed of in the third round.
Three drivers would fail to qualify: Quin Houff, Matt Mills, and Morgan Shepherd.
Full qualifying results
Race results
- Note: Justin Allgaier, William Byron, Daniel Hemric, and Elliott Sadler are not eligible for stage points because of their participation in the Championship 4.
| Pos. | # | Driver | Team | Make | Pts |
| 1 | 00 | Cole Custer ' | Stewart–Haas Racing | Ford | 10 |
| 2 | 42 | Tyler Reddick | Chip Ganassi Racing | Chevrolet | 9 |
| 3 | 23 | Spencer Gallagher ' | GMS Racing | Chevrolet | 8 |
| 4 | 3 | Scott Lagasse Jr. | Richard Childress Racing | Chevrolet | 7 |
| 5 | 18 | Ryan Preece | Joe Gibbs Racing | Toyota | 6 |
| 6 | 60 | Ty Majeski | Roush Fenway Racing | Ford | 5 |
| 7 | 21 | Daniel Hemric | Richard Childress Racing | Chevrolet | 0 |
| 8 | 1 | Elliott Sadler ' | JR Motorsports | Chevrolet | 0 |
| 9 | 14 | J. J. Yeley | TriStar Motorsports | Toyota | 2 |
| 10 | 01 | Joe Nemechek ' | JD Motorsports | Chevrolet | 0 |
Stage 2 Laps: 45
| Pos. | # | Driver | Team | Make | Pts |
| 1 | 00 | Cole Custer ' | Stewart–Haas Racing | Ford | 10 |
| 2 | 22 | Sam Hornish Jr. | Team Penske | Ford | 9 |
| 3 | 42 | Tyler Reddick | Chip Ganassi Racing | Chevrolet | 8 |
| 4 | 18 | Ryan Preece | Joe Gibbs Racing | Toyota | 7 |
| 5 | 9 | William Byron | JR Motorsports | Chevrolet | 0 |
| 6 | 1 | Elliott Sadler ' | JR Motorsports | Chevrolet | 0 |
| 7 | 48 | Brennan Poole | Chip Ganassi Racing | Chevrolet | 4 |
| 8 | 60 | Ty Majeski | Roush Fenway Racing | Ford | 3 |
| 9 | 7 | Justin Allgaier | JR Motorsports | Chevrolet | 0 |
| 10 | 24 | Corey LaJoie | JGL Racing | Toyota | 1 |
Stage 3 ''Laps: 110''
Standings after the race
;Drivers' Championship standings- Note: Only the first 12 positions are included for the driver standings.