Take a look at which drivers have led the way with the best 10-lap averages at Auto Club Speedway in this weekend’s practices ahead of Sunday’s Auto Club 400 (3:30 p.m. ET on FOX, MRN, SiriusXM NASCAR Radio).
PRACTICE 3: RESULTS
| Pos | Car | Driver | From Lap | To Lap | Avg Speed |
| 1 | 4 | Kevin Harvick | 8 | 17 | 180.161 |
| 2 | 42 | Kyle Larson | 9 | 18 | 179.417 |
| 3 | 78 | Martin Truex Jr. | 18 | 27 | 179.285 |
| 4 | 18 | Kyle Busch | 1 | 10 | 179.108 |
| 5 | 3 | Austin Dillon | 12 | 21 | 179.086 |
| 6 | 20 | Erik Jones | 1 | 10 | 178.611 |
| 7 | 11 | Denny Hamlin | 1 | 10 | 178.558 |
| 8 | 1 | Jamie McMurray | 17 | 26 | 178.545 |
| 9 | 2 | Brad Keselowski | 20 | 29 | 178.433 |
| 10 | 12 | Ryan Blaney | 1 | 10 | 178.429 |
| 11 | 48 | Jimmie Johnson | 1 | 10 | 178.262 |
| 12 | 21 | Paul Menard | 21 | 30 | 178.169 |
| 13 | 41 | Kurt Busch | 20 | 29 | 177.968 |
| 14 | 22 | Joey Logano | 16 | 25 | 177.944 |
| 15 | 88 | Alex Bowman | 1 | 10 | 177.785 |
| 16 | 14 | Clint Bowyer | 16 | 25 | 177.596 |
| 17 | 19 | Daniel Suarez | 14 | 23 | 177.459 |
| 18 | 10 | Aric Almirola | 1 | 10 | 177.398 |
| 19 | 24 | William Byron # | 12 | 21 | 177.265 |
| 20 | 9 | Chase Elliott | 1 | 10 | 177.258 |
| 21 | 17 | Ricky Stenhouse Jr. | 1 | 10 | 177.240 |
| 22 | 31 | Ryan Newman | 16 | 25 | 177.127 |
| 23 | 95 | Kasey Kahne | 16 | 25 | 176.297 |
| 24 | 37 | Chris Buescher | 16 | 25 | 176.123 |
| 25 | 13 | Ty Dillon | 12 | 21 | 175.848 |
| 26 | 34 | Michael McDowell | 21 | 30 | 175.802 |
| 27 | 38 | David Ragan | 1 | 10 | 175.484 |
| 28 | 43 | Darrell Wallace Jr. # | 5 | 14 | 174.170 |
PRACTICE 2: RESULTS
| Pos | Car | Driver | From Lap | To Lap | Avg Speed |
| 1 | 4 | Kevin Harvick | 16 | 25 | 181.009 |
| 2 | 2 | Brad Keselowski | 10 | 19 | 180.460 |
| 3 | 20 | Erik Jones | 1 | 10 | 180.303 |
| 4 | 42 | Kyle Larson | 18 | 27 | 180.060 |
| 5 | 12 | Ryan Blaney | 5 | 14 | 179.801 |
| 6 | 18 | Kyle Busch | 1 | 10 | 179.714 |
| 7 | 14 | Clint Bowyer | 10 | 19 | 179.501 |
| 8 | 9 | Chase Elliott | 5 | 14 | 179.468 |
| 9 | 3 | Austin Dillon | 8 | 17 | 179.343 |
| 10 | 1 | Jamie McMurray | 1 | 10 | 179.265 |
| 11 | 78 | Martin Truex Jr. | 1 | 10 | 179.071 |
| 12 | 11 | Denny Hamlin | 1 | 10 | 179.051 |
| 13 | 41 | Kurt Busch | 10 | 19 | 178.901 |
| 14 | 48 | Jimmie Johnson | 1 | 10 | 178.463 |
| 15 | 21 | Paul Menard | 16 | 25 | 178.437 |
| 16 | 43 | Darrell Wallace Jr. # | 12 | 21 | 177.534 |
| 17 | 95 | Kasey Kahne | 5 | 14 | 177.167 |
| 18 | 34 | Michael McDowell | 12 | 21 | 176.876 |
PRACTICE 1: RESULTS
| Pos | Car | Driver | From Lap | To Lap | Avg Speed |
| 1 | 11 | Denny Hamlin | 1 | 10 | 181.278 |
| 2 | 38 | David Ragan | 1 | 10 | 177.070 |
* Car must run 10 consecutive laps on the track to be included in the above chart.
# Indicates driver is eligible for Sunoco Rookie of the Year honors.