NASCAR XFINITY SERIES AT IOWA
Iowa Speedway — July 29, 2017
Ryan Preece
Winner
254
Laps
40
Entries
4
Leaders
Ryan Preece won the 2017 NASCAR XFINITY SERIES AT IOWA at Iowa Speedway on July 29, 2017, leading 141 of 254 laps. Kyle Benjamin finished second; Brian Scott rounded out the podium. The race featured 4 different leaders.
Race Details
| Pos | Start | +/- | Driver |
|---|---|---|---|
| 1 | 1 | — | Ryan Preece |
| 2 | 2 | — | Kyle Benjamin |
| 3 | 11 | +8 | Brian Scott |
| 4 | 8 | +4 | Brennan Poole |
| 5 | 5 | — | Cole Custer |
| 6 | 28 | +22 | J.J. Yeley |
| 7 | 3 | -4 | Daniel Hemric |
| 8 | 7 | -1 | Blake Koch |
| 9 | 17 | +8 | William Byron |
| 10 | 19 | +9 | Brandon Jones |
| 11 | 21 | +10 | Brett Moffitt |
| 12 | 6 | -6 | Elliott Sadler |
| 13 | 16 | +3 | Brendan Gaughan |
| 14 | 25 | +11 | Ryan Sieg |
| 15 | 26 | +11 | Harrison Rhodes |
| 16 | 9 | -7 | Ty Majeski |
| 17 | 20 | +3 | Dakoda Armstrong |
| 18 | 22 | +4 | Ross Chastain |
| 19 | 10 | -9 | Matt Tifft |
| 20 | 14 | -6 | Justin Allgaier |
| 21 | 18 | -3 | Ryan Reed |
| 22 | 31 | +9 | B.J. McLeod |
| 23 | 13 | -10 | Ben Kennedy |
| 24 | 30 | +6 | Joey Gase |
| 25 | 32 | +7 | Dylan Lupton |
| 26 | 36 | +10 | David Starr |
| 27 | 35 | +8 | Tommy Joe Martins |
| 28 | 27 | -1 | Jeremy Clements |
| 29 | 38 | +9 | Brandon Brown |
| 30 | 37 | +7 | Ray Black, Jr. |
| 31 | 40 | +9 | Mike Harmon |
| 32 | 39 | +7 | Stan Mullis |
| 33 | 23 | -10 | Michael Annett |
| 34 | 4 | -30 | Sam Hornish Jr. |
| 35 | 34 | -1 | Garrett Smithley |
| 36 | 15 | -21 | Tyler Reddick |
| 37 | 12 | -25 | Spencer Gallagher |
| 38 | 33 | -5 | Morgan Shepherd |
| 39 | 29 | -10 | Reed Sorenson |
| 40 | 24 | -16 | Jeff Green |
Model Performance
How well did the NR-Rating model predict this race? Across 11 matched drivers, the model averaged 10.6 positions off — worse than the season average of 8.5. Below Average
| Pos | Driver | Predicted | Actual | Delta |
|---|---|---|---|---|
| 1 | Ryan Preece | 10.1 | 1 | +9.1 |
| 4 | Brennan Poole | 24.7 | 4 | +20.7 |
| 5 | Cole Custer | 22.9 | 5 | +17.9 |
| 6 | J.J. Yeley | 28.8 | 6 | +22.8 |
| 9 | William Byron | 10.7 | 9 | +1.7 |
| 18 | Ross Chastain | 13.3 | 18 | -4.7 |
| 20 | Justin Allgaier | 18.3 | 20 | -1.7 |
| 22 | B.J. McLeod | 24.8 | 22 | +2.8 |
| 24 | Joey Gase | 23.4 | 24 | -0.6 |
| 26 | David Starr | 20.9 | 26 | -5.1 |
| 36 | Tyler Reddick | 6.2 | 36 | -29.8 |
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
- Ryan Preece: has 4 career starts at Iowa Speedway with a 18.0 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 P36 on the day.
- J.J. Yeley: was the biggest surprise, finishing P6 vs predicted P29. Track history: 12 starts, 23.5 avg finish.
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Frequently Asked Questions
Who won the 2017 NASCAR XFINITY SERIES AT IOWA?
Ryan Preece won the 2017 NASCAR XFINITY SERIES AT IOWA at Iowa Speedway.
Where was the 2017 NASCAR XFINITY SERIES AT IOWA held?
The 2017 NASCAR XFINITY SERIES AT IOWA was held at Iowa Speedway on July 29, 2017.