NASCAR XFINITY SERIES AT IOWA
Iowa Speedway — June 17, 2018
Justin Allgaier
Winner
250
Laps
40
Entries
5
Leaders
Justin Allgaier won the 2018 NASCAR XFINITY SERIES AT IOWA at Iowa Speedway on June 17, 2018, leading 182 of 250 laps. Christopher Bell finished second; Daniel Hemric rounded out the podium. The race featured 5 different leaders.
Race Details
| Pos | Start | +/- | Driver |
|---|---|---|---|
| 1 | 11 | +10 | Justin Allgaier |
| 2 | 39 | +37 | Christopher Bell |
| 3 | 2 | -1 | Daniel Hemric |
| 4 | 5 | +1 | Cole Custer |
| 5 | 3 | -2 | Brandon Jones |
| 6 | 9 | +3 | Riley Herbst |
| 7 | 17 | +10 | Ty Majeski |
| 8 | 7 | -1 | Tyler Reddick |
| 9 | 12 | +3 | Matt Tifft |
| 10 | 8 | -2 | Kaz Grala |
| 11 | 1 | -10 | Austin Cindric |
| 12 | 13 | +1 | Justin Haley |
| 13 | 10 | -3 | Michael Annett |
| 14 | 6 | -8 | Ryan Truex |
| 15 | 15 | — | John Hunter Nemechek |
| 16 | 14 | -2 | Shane Lee |
| 17 | 40 | +23 | Ryan Reed |
| 18 | 21 | +3 | Ryan Sieg |
| 19 | 16 | -3 | Ross Chastain |
| 20 | 19 | -1 | Jeremy Clements |
| 21 | 27 | +6 | Joey Gase |
| 22 | 26 | +4 | Spencer Boyd |
| 23 | 18 | -5 | Alex Labbe |
| 24 | 23 | -1 | David Starr |
| 25 | 20 | -5 | Garrett Smithley |
| 26 | 29 | +3 | Chad Finchum |
| 27 | 32 | +5 | Blake Jones |
| 28 | 4 | -24 | Elliott Sadler |
| 29 | 22 | -7 | B.J. McLeod |
| 30 | 28 | -2 | Brandon Hightower |
| 31 | 36 | +5 | Vinnie Miller |
| 32 | 25 | -7 | Tommy Joe Martins |
| 33 | 38 | +5 | Stan Mullis |
| 34 | 33 | -1 | Josh Williams |
| 35 | 24 | -11 | Jeff Green |
| 36 | 34 | -2 | Josh Bilicki |
| 37 | 35 | -2 | Timmy Hill |
| 38 | 37 | -1 | Mike Harmon |
| 39 | 30 | -9 | Morgan Shepherd |
| 40 | 31 | -9 | J.J. Yeley |
Model Performance
How well did the NR-Rating model predict this race? Across 17 matched drivers, the model averaged 7.5 positions off — better than the season average of 8.5. Average
| Pos | Driver | Predicted | Actual | Delta |
|---|---|---|---|---|
| 1 | Justin Allgaier | 18.3 | 1 | +17.3 |
| 2 | Christopher Bell | 10.7 | 2 | +8.7 |
| 4 | Cole Custer | 22.9 | 4 | +18.9 |
| 6 | Riley Herbst | 21.4 | 6 | +15.4 |
| 8 | Tyler Reddick | 6.2 | 8 | -1.8 |
| 11 | Austin Cindric | 15.4 | 11 | +4.4 |
| 12 | Justin Haley | 19.9 | 12 | +7.9 |
| 14 | Ryan Truex | 15.4 | 14 | +1.4 |
| 15 | John Hunter Nemechek | 19.1 | 15 | +4.1 |
| 19 | Ross Chastain | 13.3 | 19 | -5.7 |
| 21 | Joey Gase | 23.4 | 21 | +2.4 |
| 24 | David Starr | 20.9 | 24 | -3.1 |
| 26 | Chad Finchum | 26.4 | 26 | +0.4 |
| 29 | B.J. McLeod | 24.8 | 29 | -4.2 |
| 36 | Josh Bilicki | 28.6 | 36 | -7.4 |
| 37 | Timmy Hill | 23.9 | 37 | -13.1 |
| 40 | J.J. Yeley | 28.8 | 40 | -11.2 |
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 14 career starts at Iowa Speedway with a 10.1 avg finish (1 win) — the model may have underweighted this track history.
- Tyler Reddick: was the model’s top pick based on 10 career starts at Iowa Speedway with a 12.5 avg finish, finishing P8 on the day.
- Cole Custer: was the biggest surprise, finishing P4 vs predicted P23. Track history: 11 starts, 11.3 avg finish.
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Frequently Asked Questions
Who won the 2018 NASCAR XFINITY SERIES AT IOWA?
Justin Allgaier won the 2018 NASCAR XFINITY SERIES AT IOWA at Iowa Speedway.
Where was the 2018 NASCAR XFINITY SERIES AT IOWA held?
The 2018 NASCAR XFINITY SERIES AT IOWA was held at Iowa Speedway on June 17, 2018.