NEWTON, Iowa -- Still in search of his first victory, NASCAR Camping World Truck Series rookie Darrell Wallace Jr. topped the speed chart for the sole practice session ahead of Sunday's Fan Appreciation 200 presented by New Holland at Iowa Speedway (1:30 p.m. ET, FS1).
Battling temperatures in the mid-90s, Wallace completed his 40th lap around the 0.875-mile asphalt oval in 23.132 seconds with a best speed of 136.175 mph. Wallace leap-frogged Brendan Gaughan, whose first lap of 23.204 seconds stood for most of the session. Gaughan's speed of 135.752 on that lap was still good enough to place him fifth on the chart.
Behind Wallace were defending series champion James Buescher (48 laps, 136.134 mph), defending race-winner Ryan Blaney (44, 135.963), Jeb Burton (54, 135.911) and Gaughan to complete the top five.
Ty Dillon and Chase Elliott, who battled hard for the win on the last lap in last week's race at Canadian Tire Motorsport Park, placed eighth and 14th, respectively.
Series points leader Matt Crafton (47, 135.420) was ninth, while Ben Kennedy, making just his second career start, was 10th at 135.199. Timothy Peters (30, 135.124), whose win here in July gave him his second at the track, was 12th.
There was one caution in the two-plus hour session when Miguel Paludo made a solid right-side impact with the wall after his right-front tire went down. Paludo was uninjured, but was forced to go to a backup truck.
FULL SERIES COVERAGE
- Sports & Recreation
- Motor Racing