WHAT: 19th annual DENSO Spark Plugs NHRA Four-Wide Nationals, the fourth of 24 events in the NHRA Mello Yello Drag Racing Series. Drivers in three categories - Top Fuel, Funny Car and Pro Stock - earn points leading to 2018 NHRA Mello Yello Drag Racing Series world championships. The race also will feature competition in the NHRA Lucas Oil Series.

WHERE: The Strip at Las Vegas Motor Speedway, Las Vegas. Track is located approximately 15 miles north of downtown Las Vegas off Interstate 15.

WHEN: Friday through Sunday, April 6-8

SCHEDULE: FRIDAY, April 6 - LUCAS OIL SERIES qualifyingMELLO YELLO SERIES qualifying at 12:30 and 3:30 p.m.

SATURDAY, April 7- LUCAS OIL SERIES eliminations MELLO YELLO SERIES qualifying at 12:10 and 2:45 p.m.K&N HORSEPOWER CHALLENGE at 12:00, 2:40 and 3:20 p.m.

SUNDAY, April 8 - Pre-race ceremonies, 10:45 a.m. MELLO YELLO SERIES eliminations begin at noon

TELEVISION: FRIDAY, April 6, FS1 will televise one hour of live qualifying coverage at 7 p.m. (ETSUNDAY, April 8, FS1 will televise three hours of finals coverage at 6 p.m. (ET) 

MOST VICTORIES:Tony Schumacher, 8, TF; Greg Anderson, 8, PS; John Force, 6, FC: Larry Dixon, 5, TF; Ron Capps, 5, FC; Robert Hight,5, FC; Jeg Coughlin, 5, PS; Antron Brown, 4, TF; Erica Enders, 4, PS

MOST K&N HORSEPOWER CHALLENGE VICTORIES:Greg Anderson, 6; Kurt Johnson, 4; Jeg Coughlin, 3; Bob Glidden, 3; Warren Johnson, 3; Larry Morgan, 3; Bruce Allen, 2 Erica Enders, 2; Allen Johnson, 2; Jim Yates, 2;