Mason Massey Bio
William Mason Massey IV (born January 24, 1997) is an American professional stock car racing driver from Douglasville, Georgia. He last competed part-time in the NASCAR Xfinity Series, driving the No. 45 Chevrolet Camaro SS for Alpha Prime Racing, and part-time in the NASCAR Craftsman Truck Series, driving the No. 20 Chevrolet Silverado RST for Young’s Motorsports. Across his career, Massey has accumulated more than 200 feature wins, eleven championships, and ten track records in multiple racing classes.
Before reaching NASCAR’s national series, Massey built a résumé in dirt late model racing, where he earned early acclaim and broke regional records. His progression from local short tracks to national touring series has been marked by steady improvement and a willingness to take on new teams and opportunities.
Early Life and Background
Mason Massey was born on January 24, 1997, in Douglasville, Georgia, and grew up surrounded by the racing culture of the American South. From a young age, he was drawn to short-track competition, where he developed the skills that would later define his professional career. His family environment supported his interest in motorsports, and he spent much of his childhood around race shops and local ovals.
As a teenager, Massey began competing in dirt late model events, quickly gaining a reputation as a strong young talent. In 2012, he won the Alabama 200, a prestigious dirt late model race, signaling his arrival on the regional scene. By 2016, he had become the youngest pole winner in the Southern All Star Racing Series, further demonstrating his speed and maturity against more experienced competitors.
Path to NASCAR
Massey’s transition to NASCAR’s developmental ladder began in 2014, when he entered two NASCAR K&N Pro Series East races with DRIVE Technology, a team known for giving young drivers opportunities in stock car racing. The two starts gave him his first exposure to NASCAR’s touring series environment, providing a foundation for higher-level competition.
He continued to race in regional and dirt events while seeking a foothold in NASCAR’s national series. His perseverance paid off in 2019 when he made his NASCAR Craftsman Truck Series debut in the M&M’s 200 at Iowa Speedway, finishing 22nd before being credited with 21st after Ross Chastain’s disqualification. The debut set the stage for a wider presence across NASCAR’s top three national series in the years that followed.
Mason Massey Career
Early Career (2014-2019)
Massey’s earliest NASCAR experience came through his two K&N Pro Series East starts in 2014, where he gained a foothold in stock car racing. He continued building his record in dirt late model competition during this period, racking up wins and championships at regional short tracks in the Southeast. The Alabama 200 victory in 2012 and the Southern All Star Racing Series pole record in 2016 highlighted his rising profile.
His Truck Series debut at Iowa in 2019 formally introduced him to NASCAR’s national stage. Although the result was modest, the experience provided a launching point for additional opportunities with smaller teams in the coming seasons.
Craftsman Truck Series Breakthrough (2019-2024)
After his 2019 debut, Massey worked to secure more consistent Truck Series opportunities. In 2023, he was scheduled to run the full Craftsman Truck Series schedule for Reaume Brothers Racing in the No. 33 Ford F-150, but he departed the team after seven races. He recorded his best Truck Series finish of eleventh place at Texas Motor Speedway in the SpeedyCash.com 250 on April 1, 2023.
In 2024, Massey returned to the Truck Series on a planned full-time run, driving the No. 02 for Young’s Motorsports after an announcement on February 12, 2024. The partnership ended early, however, as Massey parted ways with the team after the race at Richmond Raceway.
Xfinity Series Progress (2020-2025)
Massey entered the NASCAR Xfinity Series in 2020, when it was announced on January 28 that he would drive the No. 99 for B. J. McLeod Motorsports on a partial schedule, with his debut coming at Las Vegas Motor Speedway. That year he also won a dirt crate late model feature at Senoia Raceway’s Fall Nationals, returning to a track where he had previously competed.
He rejoined BJMM in 2021 on a twelve-race schedule, continuing to build his stock car experience. In 2022, he moved to DGM Racing to drive the No. 91 on every oval track, posting a career-best sixth-place finish at the spring Atlanta race. Massey drove five races for SS-Green Light Racing in 2023 while also failing to qualify once for Alpha Prime Racing, and in 2025, he returned to Alpha Prime Racing in the No. 45 Chevrolet on a part-time basis.
Alpha Prime Racing Era (2023-2025)
Massey’s relationship with Alpha Prime Racing began in 2023, when he made a qualifying attempt with the team that did not result in a start. The connection led to a part-time ride in 2025, when he drove the No. 45 Chevrolet Camaro SS for the organization across a select Xfinity Series schedule.
While his Alpha Prime tenure has been part-time, the partnership has allowed Massey to continue competing at NASCAR’s second-highest national level. His consistency in landing seats with growing teams underscores the respect he has earned within the garage.
Driving Style and Strengths
Massey’s background in dirt late model racing has shaped his driving style, giving him comfort on slick surfaces and a willingness to wrestle a loose race car. His dirt-track experience has also sharpened his car control in traffic, helping him produce strong oval runs, including his career-best sixth-place finish in the Xfinity Series at Atlanta.
Notable Races and Milestones
Among Massey’s career highlights, the 2012 Alabama 200 dirt late model win stands as an early signature victory. His 2016 record as the youngest pole winner in the Southern All Star Racing Series remains a defining statistical milestone, and his sixth-place run in the 2022 Xfinity Series race at Atlanta Motor Speedway marked his best national-series finish to date.
Mason Massey Career Wins
Across his career, Mason Massey has built a win total that exceeds 200 feature victories, eleven championships, and ten track records in multiple racing classes, including dirt late models and other regional series. While his national-level NASCAR win list remains short, his development in lower-profile divisions has produced a deep catalogue of victories.
Xfinity Series Highlights
In the NASCAR Xfinity Series, Massey has driven for B. J. McLeod Motorsports, DGM Racing, SS-Green Light Racing, and Alpha Prime Racing. His career-best Xfinity finish of sixth place came at Atlanta Motor Speedway in 2022 while driving the No. 91 for DGM Racing. As of 2025, he has continued to compete part-time with Alpha Prime Racing in the No. 45 Chevrolet.
Other Wins and Performances
Outside the national NASCAR series, Massey has been a regular winner in dirt late model competition. He won the Alabama 200 in 2012 and earned the distinction of youngest pole winner in the Southern All Star Racing Series in 2016, while also collecting a feature win at Senoia Raceway’s Fall Nationals after the 2020 Xfinity season.
Mason Massey Family
Family Background and Racing Lineage
Massey’s full name is William Mason Massey IV, suggesting a multigenerational family name with roots in the American South. His upbringing in Douglasville, Georgia, placed him in close proximity to a vibrant local racing scene, which helped spark his early interest in stock cars and dirt late models.
Personal Life
Massey has been open about living with a stutter, an experience that became the subject of a short film titled “Dust and Dirt,” which was showcased at the Sundance Film Festival in 2017. He has continued to compete in NASCAR while balancing his personal experiences with his professional racing commitments.
2025 Season Performance
Mason Massey entered 2025 running a part-time NASCAR Xfinity Series schedule with Alpha Prime Racing in the No. 45 Chevrolet Camaro SS. The limited slate gave him the chance to focus on select races and build chemistry with a rising team in the garage. The season also saw him linked to Young’s Motorsports for part-time Truck Series competition in the No. 20 Chevrolet Silverado RST.
As a part-time entrant, Massey is not in contention for the Xfinity Series owner or driver championship, allowing him to chase strong finishes in chosen events. His prior experience at tracks like Atlanta, where he earned his career-best Xfinity result, gives him identifiable venues where he can target a top-ten performance in 2025.
With Alpha Prime Racing continuing to grow as an organization, Massey’s 2025 role offers a platform to showcase his dirt-influenced driving style on the national stage. Continued quality runs could position him for expanded opportunities in 2026 across either the Xfinity Series or the Craftsman Truck Series.