|Martin Truex Jr. has top-10 finishes in all six 2015 starts|
Truex was the only driver over 191 mph, clocking a field-best speed of 191.096 mph. Kasey Kahne was second-fastest at 190.463 mph, followed by Kevin Harvick (189.773 mph).
The second and final practice session for Saturday’s Duck Commander 500 will be later today, going from 2 to 3:20 pm ET.
Also on tap for tonight: qualifying at 6:45 pm ET.