By Chris Knight

NEWTON, Iowa – Following his second NASCAR Camping World Truck Series win of the season last weekend at Texas Motor Speedway, Sunoco Rookie of the Year contender William Byron used a late race restart and three-wide pass to charge from fourth to first to win Saturday night’s Speediatrics 200 at Iowa Speedway.

William Byron, driver of the #9 Liberty University Toyota, celebrates in Victory Lane after winning the NASCAR Camping World Truck Series Speediatrics 200 at Iowa Speedway on June 18, 2016 in Newton, Iowa. (Photo by Rainier Ehrhardt/NASCAR via Getty Images)

Byron, driving the No. 9 Liberty University Toyota Tundra, swiped the lead from Cole Custer on a restart with nine laps remaining, but a caution six laps from the finish saw the Charlotte, North Carolina, native have to defend his presence at the front.

In a two-lap shootout, the 18-year-old Byron fended off challengers Custer and Cameron Hayley for a series-high third win in just his ninth Truck Series start.

“My gosh, it’s awesome just to be a part of Kyle Busch Motorsports and to have the group of guys I do,” said Byron from Victory Lane. “It’s amazing. I’m so fortunate to be in this position.

“We had a couple setbacks there. I stalled it on pit road and I had a few setbacks on some restarts, but we kept after it until that last restart. It’s awesome.”

Custer, with new crew chief Marcus Richmond, led three dramatic laps following a Lap 188 restart which saw the race lead exchange several times before Byron sailed away permanently on Lap 191.

William Byron, driver of the #9 Liberty University Toyota, takes the checkered flag during the NASCAR Camping World Truck Series Speediatrics 200 at Iowa Speedway on June 18, 2016 in Newton, Iowa. (Photo by Jonathan Moore/NASCAR via Getty Images)

“For the first 10 laps or so, the others were probably better than us on four tires,” said Custer, who recorded his season best finish. “After that it kind of equaled out. I thought I had them there when I took the lead.

“I can’t thank Marcus and everyone enough. They worked their tails off all weekend. I really appreciate that. I think we’re going in the right direction.”

Byron, who led a race-high 107 laps, took the lead from pole sitter John Hunter Nemechek on a Lap 54 restart and led until the event’s third caution.

The running order changed dramatically following a caution on Lap 146 when five teams elected to take two tires during the final pit stop, handing the lead to Tyler Reddick.

During the stop, Byron stalled his truck leaving pit road putting him 10th on the restart. Using four tires to combat his mistake, the NASCAR NEXT alumnus began carving his path through the field and found himself back in contention when the fourth yellow of the night waved just 24 laps from the checkered flag.

William Byron, driver of the #9 Liberty University Toyota, puts a winner decal on his truck in Victory Lane after winning the NASCAR Camping World Truck Series Speediatrics 200 at Iowa Speedway on June 18, 2016 in Newton, Iowa. Photo by Rainier Ehrhardt/NASCAR via Getty Images

The event was red flagged for five minutes, 46 seconds for track cleanup after an incident involving Caleb Holman and Derek Scott Jr. on Lap 174 .

Next up for the NASCAR Camping World Truck Series is a stop at Gateway Motorsports Park for the running of the third annual Drivin’ for Linemen 200 on Jun. 25.

Note:  Additional photos posted below results.

NASCAR Camping World Truck Series Race – Speediatrics 200

Iowa Speedway

Newton, Iowa

Saturday, June 18, 2016

               1. (5) William Byron #, Toyota, 200.

               2. (11) Cole Custer #, Chevrolet, 200.

               3. (2) Cameron Hayley, Toyota, 200.

               4. (10) Ben Rhodes #, Toyota, 200.

               5. (15) Tyler Reddick, Ford, 200.

               6. (17) Daniel Suarez(i), Toyota, 200.

               7. (3) Ben Kennedy, Chevrolet, 200.

               8. (9) Matt Crafton, Toyota, 200.

               9. (13) Christopher Bell #, Toyota, 200.

               10. (7) Johnny Sauter, Chevrolet, 200.

               11. (19) Timothy Peters, Toyota, 200.

               12. (1) John H Nemechek, Chevrolet, 200.

               13. (16) Spencer Gallagher, Chevrolet, 200.

               14. (25) German Quiroga, Toyota, 200.

               15. (18) Daniel Hemric, Ford, 200.

               16. (22) Austin Wayne Self #, Toyota, 200.

               17. (6) Brandon Jones(i), Chevrolet, 200.

               18. (14) Rico Abreu #, Toyota, 200.

               19. (20) John Wes Townley, Chevrolet, 200.

               20. (26) Jordan Anderson, Chevrolet, 200.

               21. (23) Jake Griffin, Chevrolet, 199.

               22. (29) Casey Smith, Chevrolet, 198.

               23. (8) Nick Drake, Chevrolet, 197.

               24. (24) Brandon Brown, Chevrolet, 197.

               25. (27) Derek Scott Jr, Chevrolet, 196.

               26. (12) Caleb Holman, Chevrolet, Accident, 192.

               27. (28) Travis Kvapil, Chevrolet, 191.

               28. (31) Jennifer Jo Cobb, Chevrolet, 191.

               29. (4) Kaz Grala, Chevrolet, 189.

               30. (30) Tommy Joe Martins, Chevrolet, Accident, 173.

               31. (21) Parker Kligerman, Ford, Accident, 41.

               32. (32) Claire Decker(i), Chevrolet, Fuel Pump, 5.

Average Speed of Race Winner:  92.702 mph.

Time of Race:  01 Hrs, 53 Mins, 16 Secs. Margin of Victory:  0.431 Seconds.

Caution Flags:  5 for 39 laps.

Lead Changes:  4 among 4 drivers.

Lap Leaders:   J. Nemechek 1-53; W. Byron # 54-150; T. Reddick 151-187; C. Custer # 188-190; W. Byron # 191-200.

Leaders Summary (Driver, Times Lead, Laps Led):  W. Byron # 2 times for 107 laps; J. Nemechek 1 time for 53 laps; T. Reddick 1 time for 37 laps; C. Custer # 1 time for 3 laps.

Top 10 in Points: M. Crafton – 219; W. Byron # – 208; T. Peters – 198; D. Hemric – 186; T. Reddick – 182; J. Nemechek – 175; J. Sauter – 174; B. Kennedy – 168; S. Gallagher – 165; C. Hayley – 158.

John Hunter Nemechek, driver of the #8 Fire Alarm Services Chevrolet, leads the field at the start of the during the NASCAR Camping World Truck Series Speediatrics 200 at Iowa Speedway on June 18, 2016 in Newton, Iowa. (Photo by Jonathan Moore/NASCAR via Getty Images)

Daniel Suarez, driver of the #51 ARRIS Toyota and Spencer Gallagher, driver of the #23 Alamo Chevrolet, race on track during the NASCAR Camping World Truck Series Speediatrics 200 at Iowa Speedway on June 18, 2016 in Newton, Iowa. (Photo by Jonathan Moore/NASCAR via Getty Images)

John Hunter Nemechek, driver of the #8 Fire Alarm Services Chevrolet, leads Ben Kennedy, driver of the #33 Wheelwell Chevrolet, during the NASCAR Camping World Truck Series Speediatrics 200 at Iowa Speedway on June 18, 2016 in Newton, Iowa. (Photo by Rainier Ehrhardt/NASCAR via Getty Images)

Cole Custer, driver of the #00 Haas Automation Chevrolet, leads Tyler Reddick, driver of the #29 Cooper Standard Ford, and Ben Rhodes, driver of the #41 Alpha Energy Solutions Toyota, during the NASCAR Camping World Truck Series Speediatrics 200 at Iowa Speedway on June 18, 2016 in Newton, Iowa. (Photo by Rainier Ehrhardt/NASCAR via Getty Images)

William Byron, driver of the #9 Liberty University Toyota, races during the NASCAR Camping World Truck Series Speediatrics 200 at Iowa Speedway on June 18, 2016 in Newton, Iowa. (Photo by Rainier Ehrhardt/NASCAR via Getty Images)

William Byron, driver of the #9 Liberty University Toyota, celebrates after winning the NASCAR Camping World Truck Series Speediatrics 200 at Iowa Speedway on June 18, 2016 in Newton, Iowa. (Photo by Jonathan Moore/NASCAR via Getty Images)

William Byron, driver of the #9 Liberty University Toyota, celebrates with a burnout after winning the NASCAR Camping World Truck Series Speediatrics 200 at Iowa Speedway on June 18, 2016 in Newton, Iowa. (Photo by Rainier Ehrhardt/NASCAR via Getty Images)