NASCAR Xfinity Series at Darlington

Darlington Raceway — May 8, 2021

Justin Allgaier

Winner

148

Laps

Entries

Leaders

Justin Allgaier won the 2021 NASCAR Xfinity Series at Darlington at Darlington Raceway on May 8, 2021, leading 10 of 148 laps. Josh Berry finished second; Brandon Jones rounded out the podium. The race featured 7 different leaders.

Race Details

Date

Saturday, May 8, 2021

Track

Darlington Raceway

Season

2021

Winner

Justin Allgaier

Leaders

7 drivers

Sort by

Pos	Start	+/-	Driver	Laps	Interval	Status	Led	Pts
1	16	+15	Justin Allgaier	148	—	Running	10	46
2	24	+22	Josh Berry	148	—	Running	8	42
3	22	+19	Brandon Jones	148	—	Running	—	34
4	5	+1	Noah Gragson	148	—	Running	40	51
5	7	+2	Daniel Hemric	148	—	Running	38	39
6	12	+6	Jeremy Clements	148	—	Running	—	31
7	20	+13	Michael Annett	148	—	Running	—	35
8	13	+5	Brett Moffitt	148	—	Running	—	30
9	11	+2	Ryan Sieg	148	—	Running	—	34
10	23	+13	Alex Labbe	148	—	Running	—	27
11	8	-3	Harrison Burton	148	—	Running	12	44
12	19	+7	Landon Cassill	148	—	Running	—	25
13	1	-12	A.J. Allmendinger	148	—	Running	6	37
14	4	-10	Justin Haley	148	—	Running	—	23
15	14	-1	Tommy Joe Martins	148	—	Running	—	28
16	33	+17	Ryan Ellis	148	—	Running	—	21
17	17	—	David Starr	148	—	Running	—	20
18	29	+11	Ty Gibbs	148	—	Running	—	21
19	10	-9	Myatt Snider	148	—	Running	—	22
20	3	-17	Jeb Burton	148	—	Running	—	22
21	36	+15	Tanner Berryhill	148	—	Running	—	16
22	35	+13	J.J. Yeley	148	—	Running	—	15
23	15	-8	Timmy Hill	148	—	Running	—	0
24	9	-15	Brandon Brown	148	—	Running	—	13
25	39	+14	Bayley Currey	148	—	Running	—	0
26	38	+12	B.J. McLeod	148	—	Running	—	0
27	34	+7	Ryan Vargas	148	—	Running	—	10
28	6	-22	Riley Herbst	148	—	Running	—	9
29	25	-4	Colby Howard	147	—	Running	—	8
30	2	-28	Austin Cindric	147	—	Running	34	19
31	28	-3	Jeffrey Earnhardt	146	—	Running	—	6
32	31	-1	Jesse Little	146	—	Running	—	5
33	26	-7	Kyle Weatherman	142	—	Running	—	4
34	40	+6	Matt Jaskol	142	—	Running	—	3
35	18	-17	Jade Buford	140	—	Running	—	2
36	27	-9	Brandon Gdovic	140	—	Running	—	1
37	30	-7	Joe Graf Jr.	132	—	Running	—	1
38	37	-1	Gray Gaulding	107	—	DNF	—	1
39	21	-18	Josh Williams	48	—	DNF	—	1
40	32	-8	Matt Mills	44	—	DNF	—	1

Model Performance

How well did the NR-Rating model predict this race? Across 12 matched drivers, the model averaged 8.7 positions off — close to the season average of 8.5. Average

Pos	Driver	Predicted	Actual	Delta	Conf.
1	Justin Allgaier	18.3	1	+17.3	Coinflip
2	Josh Berry	22.9	2	+20.9	High Confidence
4	Noah Gragson	21.4	4	+17.4	High Confidence
13	A.J. Allmendinger	18.3	13	+5.3	Moderate
14	Justin Haley	19.9	14	+5.9	Moderate
17	David Starr	20.9	17	+3.9	Moderate
18	Ty Gibbs	14.5	18	-3.5	Coinflip
22	J.J. Yeley	28.8	22	+6.8	High Confidence
23	Timmy Hill	23.9	23	+0.9	High Confidence
26	B.J. McLeod	24.8	26	-1.2	High Confidence
28	Riley Herbst	21.4	28	-6.6	High Confidence
30	Austin Cindric	15.4	30	-14.6	Coinflip

Predicted finish from NR-Rating model. Delta = predicted − actual (positive = driver beat prediction). Confidence: High Confidence = low variance (stdDev ≤ 9), Moderate = medium variance, Coinflip = high variance.

Historical Context

Justin Allgaier: has 21 career starts at Darlington Raceway with a 10.0 avg finish (4 wins) — the model may have underweighted this track history.
Ty Gibbs: was the model’s top pick based on 13 career starts at Darlington Raceway with a 16.4 avg finish, finishing P18 on the day.
Josh Berry: was the biggest surprise, finishing P2 vs predicted P23. Track history: 12 starts, 14.0 avg finish.

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Frequently Asked Questions

Who won the 2021 NASCAR Xfinity Series at Darlington?

Justin Allgaier won the 2021 NASCAR Xfinity Series at Darlington at Darlington Raceway.

Where was the 2021 NASCAR Xfinity Series at Darlington held?

The 2021 NASCAR Xfinity Series at Darlington was held at Darlington Raceway on May 8, 2021.