March 31, 2019 – Denny Hamlin captured his second win of the 2019 NASCAR Cup Series season in the O’Reilly Auto Parts 500 at Texas Motor Speedway. Hamlin overcame two pit road penalties in the race to score his 33rd career win and third at TMS.
March 31, 2012 – Kevin Harvick turned in a dominating performance leading a record 248 of 250 laps to win the NASCAR Gander RV & Outdoors Truck Series Kroger 250 at Martinsville Speedway. Harvick’s run eclipsed the series mark previously held by Mike Skinner, who led 247 of 250 laps on his way to a Martinsville win in 2007.
March 31, 2007 – Mike Skinner won his third consecutive NASCAR Gander RV & Outdoors (Craftsman) Truck Series event of the season in the Kroger 250 at Martinsville Speedway. Skinner led all but seven laps and held off Todd Bodine in a green-white-checkered finish.
March 31, 2001 – Kevin Harvick won his first of five NASCAR Xfinity (Busch) Series races during his 2001 championship season in the Jani-King 300 at Texas Motor Speedway. Harvick, who was driving the No. 2 AC/Delco Chevrolet, took the lead from Jimmie Johnson on a re-start with 40 laps to go and then held off Jeff Burton for the victory.
March 31, 1996 – NASCAR Hall of Famers and Hendrick Motorsports teammates Jeff Gordon and Terry Labonte finished 1-2 at Bristol Motor Speedway. Gordon put up 10 wins in 1996 but it was Labonte who won the NASCAR Cup Series title, the second of his career (1984, 1996).
March 31, 1991 – Butch Miller scored the NASCAR Xfinity (Busch Grand National) Series win in the Mountain Dew 500 at Hickory Motor Speedway. Miller survived 17 cautions and held off Jimmy Hensley at the checkered flag.
March 31, 1990 – Harry Gant won his second consecutive NASCAR Xfinity (Busch Grand National) Series race at Darlington Raceway in the Pontiac 200. Gant led 73 laps and took the checkered flag ahead of NASCAR Hall of Famer Bobby Labonte. Gant’s win was his fourth in a six-race stretch at "the track too tough to tame."
March 31, 1968 – NASCAR Hall of Famer Cale Yarborough won the Atlanta 500 after leading 172 laps. The win was his second of six that season driving the No. 21 for the Wood Brothers.
March 31, 1963 – NASCAR Hall of Famers and Holman-Moody Racing teammates Fireball Roberts and Fred Lorenzen put on a clinic at Bristol Motor Speedway with both drivers leading over 150 laps each and both drivers being the only two to finish on the lead lap of the NASCAR Cup Series race. Roberts took the victory, his first of the season, followed closely by Lorenzen.