Sunday's Pennzoil 400 presented by Jiffy Lube will air live beginning at 1 p.m. MT (3 p.m. ET) on Fox, SiriusXM NASCAR Radio Channel 90 and PRN.
Kyle Larson, the fastest in Saturday's earlier practice, was second-best in the final tune-up, landing a lap of 186.136 miles per hour in the Chip Ganassi Racing No. 42 Chevrolet.
"There is definitely some added importance to this race with (Las Vegas) being in the playoffs", said Kyle Larson, who excelled in practice this week at the track where he finished second to eventual Cup champion Martin Truex Jr. past year.
Chase Elliott, Ricky Stenhouse Jr., Brad Keselowski, Erik Jones and Joey Logano, respectively, filled positions six through 10 on the grid. Blaney won the pole for Sunday's NASCAR Cup Series auto race.
Harvick kept up his outstanding start to the season and secured a front-row Ford lockout with a second-place finish in qualifying for Sunday's Pennzoil 400.
Truex earned his first of eight victories last season at Las Vegas Motor Speedway.
The Furniture Row Racing driver will line up on the outside of Row 2 for the 267-lap, 400.5-mile race. The series will return to the track for a September 16 race, the opener of the playoffs, so lessons learned Sunday can be forwarded to the second race. The second and third rounds were really good. "We've got to figure something out".
"Even though the season is just starting, if I was Jimmie Johnson, I'd be anxious", Waltrip said. "Every single guy out there can drive a race auto at a high level so I think it'll be eye-opening in the race to get a feel for what it's like to race 30 guys that are in really fast cars and can take advantage of it". "Not that this race when it was just a stand-alone event wasn't important, but anytime you can race at a track that you are going to come back at in the final 10, it's got some added importance to it".
"I thought our Ford was pretty good over three rounds".
Kevin Harvick was second fastest in the money round at 190.248 miles per hour. Jimmie Johnson claimed the third spot on the leaderboard (186.587) for Hendrick Motorsports, completing a 1-2-3 practice sweep for Chevrolet drivers.