Speediatrics 200
Iowa Speedway — June 18, 2016
William Byron
Winner
200
Laps
32
Entries
4
Leaders
William Byron won the 2016 Speediatrics 200 at Iowa Speedway on June 18, 2016, leading 107 of 200 laps. Cole Custer finished second; Cameron Hayley rounded out the podium. The race featured 4 different leaders.
Race Details
| Pos | Start | +/- | Driver |
|---|---|---|---|
| 1 | 5 | +4 | William Byron |
| 2 | 11 | +9 | Cole Custer |
| 3 | 2 | -1 | Cameron Hayley |
| 4 | 10 | +6 | Ben Rhodes |
| 5 | 15 | +10 | Tyler Reddick |
| 6 | 17 | +11 | Daniel Suarez |
| 7 | 3 | -4 | Ben Kennedy |
| 8 | 9 | +1 | Matt Crafton |
| 9 | 13 | +4 | Christopher Bell |
| 10 | 7 | -3 | Johnny Sauter |
| 11 | 19 | +8 | Timothy Peters |
| 12 | 1 | -11 | John Hunter Nemechek |
| 13 | 16 | +3 | Spencer Gallagher |
| 14 | 25 | +11 | German Quiroga |
| 15 | 18 | +3 | Daniel Hemric |
| 16 | 22 | +6 | Austin Wayne Self |
| 17 | 6 | -11 | Brandon Jones |
| 18 | 14 | -4 | Rico Abreu |
| 19 | 20 | +1 | John Wes Townley |
| 20 | 26 | +6 | Jordan Anderson |
| 21 | 23 | +2 | Jake Griffin |
| 22 | 29 | +7 | Casey Smith |
| 23 | 8 | -15 | Nick Drake |
| 24 | 24 | — | Brandon Brown |
| 25 | 27 | +2 | Derek Scott Jr. |
| 26 | 12 | -14 | Caleb Holman |
| 27 | 28 | +1 | Travis Kvapil |
| 28 | 31 | +3 | Jennifer Jo Cobb |
| 29 | 4 | -25 | Kaz Grala |
| 30 | 30 | — | Tommy Joe Martins |
| 31 | 21 | -10 | Parker Kligerman |
| 32 | 32 | — | Claire Decker |
Model Performance
How well did the NR-Rating model predict this race? Across 6 matched drivers, the model averaged 8.1 positions off — close to the season average of 8.5. Average
| Pos | Driver | Predicted | Actual | Delta |
|---|---|---|---|---|
| 1 | William Byron | 10.7 | 1 | +9.7 |
| 2 | Cole Custer | 22.9 | 2 | +20.9 |
| 5 | Tyler Reddick | 6.2 | 5 | +1.2 |
| 6 | Daniel Suarez | 14.0 | 6 | +8.0 |
| 9 | Christopher Bell | 10.7 | 9 | +1.7 |
| 12 | John Hunter Nemechek | 19.1 | 12 | +7.1 |
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
- William Byron: has 5 career starts at Iowa Speedway with a 2.8 avg finish (3 wins) — 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 P5 on the day.
- Cole Custer: was the biggest surprise, finishing P2 vs predicted P23. Track history: 11 starts, 11.3 avg finish.
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Frequently Asked Questions
Who won the 2016 Speediatrics 200?
William Byron won the 2016 Speediatrics 200 at Iowa Speedway driving for Kyle Busch Motorsports.
Where was the 2016 Speediatrics 200 held?
The 2016 Speediatrics 200 was held at Iowa Speedway on June 18, 2016.