William Mason Massey IV (born January 24, 1997) is an American professional

stock car racing Stock car racing is a form of Auto racing, automobile racing run on oval track racing, oval tracks and road courses. It originally used Production vehicle, production-model cars, hence the name "stock car", but is now run using cars specifical ...

driver. He competes part-time in the

NASCAR Xfinity Series The NASCAR Xfinity Series (NXS) is a stock car racing series organized by NASCAR. It is promoted as NASCAR's second-tier circuit to the organization's top level NASCAR Cup Series, Cup Series. NXS events are frequently held as a Undercard, support ...

, driving the No. 45

Chevrolet SS The Holden Commodore (VF) is a full-size car that was produced by Holden between June 2013 and October 2017. It was the second and last significantly restyled iteration of the fourth (and final) generation of the Holden Commodore to be manufac ...

for

Alpha Prime Racing Alpha Prime Racing (formerly Martins Motorsports) is an American stock car racing team that competes in the NASCAR NASCAR Xfinity Series, Xfinity Series. The team was founded in 2009 by Craig Martins, and fields the No. 4 Chevrolet Camaro (sixth ...

. Massey has recorded over 200 feature wins, 11 championships, and 10 track records across multiple classes.

Racing career

K&N Pro Series East

Massey competed in two

NASCAR K&N Pro Series East The ARCA Menards Series East (formerly known by other names) is a regional stock car racing series owned and operated by the Automobile Racing Club of America (ARCA) and the National Association for Stock Car Auto Racing (NASCAR). Races are hel ...

races in 2014 for

DRIVE Technology Sam Hunt Racing is an American professional stock car racing team that currently competes in the NASCAR Xfinity Series, fielding the No. 26 Toyota Supra full-time for Dean Thompson and the No. 24 part-time for multiple drivers. The team is cu ...

Craftsman Truck Series

Massey made his NASCAR Gander Outdoors Truck Series debut in the

2019 M&M's 200 The 2019 M&M's 200 is a NASCAR Gander Outdoors Truck Series race held on June 16, 2019, at Iowa Speedway in Newton, Iowa. Contested over 200 laps on the D-shaped oval, it was the 10th race of the 2019 NASCAR Gander Outdoors Truck Series season. ...

Iowa Speedway Iowa Speedway is a oval short track in Newton, Iowa. Since its inaugural season of racing in 2006, the track has hosted a variety of racing events, including events sanctioned by NASCAR and IndyCar. NASCAR has owned the facility since 2013, wi ...

. He placed 22nd in the event, and was moved up one position after

Ross Chastain Ross Lee Chastain (born December 4, 1992) is an American professional stock car racing driver. He competes full-time in the NASCAR Cup Series, driving the No. 1 Chevrolet Camaro (sixth generation)#ZL1, Chevrolet ZL1 for Trackhouse Racing, part-tim ...

's DQ. Massey was scheduled to run the full NASCAR Craftsman Truck Series in 2023 for

Reaume Brothers Racing Reaume Brothers Racing is an American professional stock car racing team that currently competes full-time in the NASCAR Craftsman Truck Series. The team is owned by Josh Reaume, and it currently fields the No. 2 Ford F-150 full-time for multiple ...

in the No. 33

Ford F-150 The Ford F-Series is a series of light-duty trucks marketed and manufactured by Ford Motor Company since model year 1948 as a range of full-sized pickup trucks — positioned between Ford's Ranger and Super Duty pickup trucks. Alongs ...

, but left the team 7 races into the season. On April 1, 2023, at Texas Motor Speedway in the SpeedyCash.com 250, Massey had his best career Truck Series finish of 11th place. Mason Massey 02 Truck Las Vegas 2024

On February 12, 2024, it was announced that Massey would run full-time in the Truck Series in

2024 The year saw the list of ongoing armed conflicts, continuation of major armed conflicts, including the Russian invasion of Ukraine, the Myanmar civil war (2021–present), Myanmar civil war, the Sudanese civil war (2023–present), Sudane ...

, driving the No. 02 truck for

Young's Motorsports Young's Motorsports is an American professional stock car racing team that competes in the NASCAR Xfinity Series, NASCAR Craftsman Truck Series, and the ARCA Menards Series. In the Xfinity Series, they field the No. 42 Chevrolet Camaro (sixth gene ...

. However, he parted ways with the team after the race at

Richmond Richmond most often refers to: * Richmond, British Columbia, a city in Canada * Richmond, California, a city in the United States * Richmond, London, a town in the London Borough of Richmond upon Thames, England * Richmond, North Yorkshire, a town ...

Xfinity Series

On January 28, 2020, it was announced that Massey would drive the No. 99 for B. J. McLeod Motorsports for a portion of the

2020 NASCAR Xfinity Series Rookie of the Year title. file:Ross Chastain Kaulig Racing 2020.jpg"> List of NASCAR Manufacturers' champions#Xfinity Series">Manufacturer's championship with 10 wins and 1190 points. The 2020 NASCAR Xfinity Series was the 39th season of t ...

season, with his first race at

Las Vegas Motor Speedway Las Vegas Motor Speedway (track complex formerly known as Las Vegas Speedway Park from 1993 to 1996, Las Vegas Speedway in 1992, Las Vegas International Speedway from 1990 to 1992, as the Las Vegas International Speedrome from 1972 to 1990) is a ...

. After the season was over, Massey returned to a track that he raced earlier in his career to win the

dirt Dirt is any matter considered unclean, especially when in contact with a person's clothes, skin, or possessions. In such cases, they are said to become dirty. Common types of dirt include: * Debris: scattered pieces of waste or remains * Du ...

crate late model feature at Senoia Raceway's Fall Nationals. Massey rejoined BJMM and the No. 99 on a 12-race schedule in 2021. In 2022, he joined

DGM Racing DGM Racing (formerly King Autosport) is a Canadian professional stock car racing team that currently competes in the NASCAR Xfinity Series. The team is owned by Mario Gosselin (racing driver), Mario Gosselin. The team is now located in Lake Wales ...

to drive the No. 91 for every oval race. Massey achieved a career-best 6th place finish at the spring Atlanta race. In 2023 he drove 5 races for

SS-Green Light Racing SS-Green Light Racing is an American professional stock car racing team that currently competes in the NASCAR Xfinity Series, fielding the No. 07 Chevrolet Camaro SS for multiple drivers and the No. 14 primarily for Garrett Smithley. The team ha ...

and DNQ'd once for

. In 2025, he competed part-time with

in the No. 45

Chevrolet Chevrolet ( ) is an American automobile division of the manufacturer General Motors (GM). In North America, Chevrolet produces and sells a wide range of vehicles, from subcompact automobiles to medium-duty commercial trucks. Due to the promi ...

Personal life

Massey suffers from

stuttering Stuttering, also known as stammering, is a speech disorder characterized externally by involuntary repetitions and prolongations of sounds, syllables, words, or phrases as well as involuntary silent pauses called blocks in which the person who ...

, which was the subject of a short film titled "Dust and Dirt", which was showcased at the

Sundance Film Festival The Sundance Film Festival is an annual film festival organized by the Sundance Institute. It is the largest independent film festival in the United States, with 423,234 combined in-person and online viewership in 2023. The festival has acted ...

in 2017.

Motorsports career results

NASCAR

( key) (Bold – Pole position awarded by qualifying time. ''Italics'' – Pole position earned by points standings or practice time. * – Most laps led.)

Xfinity Series

Craftsman Truck Series

Season still in progress
Ineligible for series points

K&N Pro Series East

References

External links

*
Official profile at Alpha Prime Racing
* {{DEFAULTSORT:Massey, Mason 1997 births Living people NASCAR drivers Racing drivers from Atlanta Sportspeople from Douglasville, Georgia People with speech disorders