The Sprint Cup Series entry fielded by HScott Motorsports originated as Phoenix Racing, founded in 1990 by Florida businessman James Finch and named after his construction company. Harry Scott Jr. acquired the Cup team from Finch in late 2013, and following the dissolution of Turner Scott Motorsports after the 2014 season, Scott absorbed its Xfinity and K&N Pro Series operations to form the expanded HScott organization. The formal name HScott Motorsports was adopted in early 2014.
Under Phoenix Racing, the team ran the No. 51, a number Scott retained for his first season of ownership. Ryan Truex drove Scott's first race at Richmond in 2013, followed by appearances from Justin Allgaier and Kyle Larson. For 2014, Allgaier became the full-time driver in a bid for Rookie of the Year honors, finishing 29th in the standings with a best finish of 15th.
In 2015, Allgaier remained with the team running the No. 15. A standout performance came at Bristol, where he finished eighth — the team's first top-ten in the Cup Series. Despite this result, the team struggled overall and Allgaier departed at season's end to join JR Motorsports in the Xfinity Series.
For 2016, Clint Bowyer joined the team following the closure of Michael Waltrip Racing, bringing with him sponsorships from 5-Hour Energy, Visine, Aaron's, and PEAK. Despite early struggles, Bowyer achieved finishes of eighth at Bristol, seventh at Talladega, and ninth at Daytona. A planned technical alliance with Stewart-Haas Racing failed to materialize as expected, limiting the team's competitiveness. Bowyer finished 27th in driver points.
Following the 2016 season, Bowyer filed a lawsuit against HScott Motorsports for $2.2 million in prize money and commission; the dispute was settled shortly after. In December 2016, Scott sold the No. 15 charter to Premium Motorsports and announced the closure of the Cup operation.
For 2015, Michael Annett brought primary sponsorship from Pilot Flying J to drive the No. 46 full-time. Annett's best finish in 2015 was 23rd, achieved at three separate events, and he finished 36th in the standings. He returned in 2016 with the same primary backer, but struggled throughout the year with a best finish of 20th at Daytona. Annett and his sponsors left for JR Motorsports after the season, and the No. 46 program was shut down alongside the Cup team in December 2016.
Following Turner Scott Motorsports' collapse, Scott partnered with Chip Ganassi to operate a single Xfinity Series entry designated No. 42. Kyle Larson served as the primary driver in 2015, sharing duties with Brennan Poole and Justin Marks. Larson won the season finale at Homestead, leading 118 laps and passing Austin Dillon with four laps remaining. He ended the year with four top-fives, nine top-tens, and 175 laps led. The 42 finished 15th in owner points. The team became fully operated by Ganassi for 2016.
Scott took over the K&N Pro Series East operation of Turner Scott Motorsports for the 2015 season, partnering with Justin Marks to field multiple Chevrolet entries. The program produced immediate success: William Byron won the 2015 K&N Pro Series East championship with four wins, and Justin Haley won the 2016 championship with two wins and thirteen top-fives. Harrison Burton, son of NASCAR commentator and former driver Jeff Burton, joined the program in 2016.
The K&N program was also shut down in December 2016 alongside the Cup team.
HScott fielded Justin Haley in a limited schedule in the ARCA Racing Series during 2015, running the No. 74 Chevrolet at IRP and twice at Salem Speedway. The team's best result was a fourth-place finish.
Harry Scott Jr. announced the closure of HScott Motorsports in December 2016 after failing to secure viable driver and sponsor combinations for the 2017 season. On August 2, 2017, Scott died. Despite a brief existence at the Cup level, the organization left a meaningful footprint in NASCAR's feeder series, helping develop William Byron and Justin Haley into drivers who subsequently competed at NASCAR's top levels.