Clay Greenfield Bio
Clayton Michael Greenfield is an American professional stock car racing driver and team owner. Born on June 3, 1984, in Clarksville, Tennessee, he has spent more than a decade competing across NASCAR’s national touring divisions as well as regional late model series. He is best known for his long-running presence in the NASCAR Craftsman Truck Series, where he has driven the No. 95 Chevrolet Silverado RST for his own organization, GK Racing.
Early Life and Background
Greenfield was born and raised in Clarksville, Tennessee, where he attended Clarksville Academy. Growing up in the heart of the mid-South, he was exposed to short-track racing at a young age and began developing his skills on the regional circuit. His education in Tennessee helped him balance academics with the demands of an emerging racing career.
Like many aspiring drivers, Greenfield progressed through local and regional stock car series before reaching the national stage. Clarksville’s proximity to short tracks in Tennessee and Kentucky gave him consistent seat time and allowed him to refine his craft against seasoned late model veterans. These formative years laid the foundation for his eventual move into NASCAR’s development ladder.
Path to NASCAR
Greenfield’s early professional racing took place in the UARA-Stars Series, a prominent late model touring series in the southeastern United States. He also attempted several qualifying efforts in the ARCA Racing Series during the mid-2000s, making his ARCA debut at Salem Speedway in 2004. Driving for Wayne Peterson Racing, he finished twelfth, which marked the team’s best result since 1998.
These regional and ARCA appearances gave Greenfield the experience needed to attract attention from NASCAR teams. By 2010, he was ready to test himself against the country’s best stock car drivers, setting the stage for his Truck Series debut later that year. His steady progression through the lower ranks demonstrated the patience and persistence that have defined his career.
Clay Greenfield Career
Early Career (2004-2010)
Greenfield’s professional career began in 2004 with his ARCA Racing Series debut at Salem Speedway, where he turned heads with a twelfth-place finish for Wayne Peterson Racing. Throughout the mid-2000s, he balanced ARCA starts with a full slate of UARA-Stars Series competition, gradually building a reputation as a determined and mechanically sound short-track racer.
In 2010, Greenfield made his NASCAR national series debut in the Camping World Truck Series at Martinsville Speedway, driving for Team Gill Racing. The transition to NASCAR’s national level represented a major step forward and introduced him to the larger teams, longer schedules, and elevated competition that would shape the rest of his career.
NASCAR Craftsman Truck Series (2010-Present)
Over his first three Truck Series seasons, Greenfield competed in 22 races, posting a best finish of tenth at Daytona International Speedway in 2012. He opened 2013 by posting the fastest time in practice for the season-opening race at Daytona, signaling his speed on the big tracks, even though a string of DNQs and mechanical issues limited his on-track results that year.
After stepping away for a period, Greenfield returned to the Truck Series in 2020 with a renewed part-time campaign. That season also brought a notable crew chief addition, as two-time Cup Series championship crew chief Jeff Hammond came out of retirement to lead his No. 68 effort in selected events. Greenfield’s best Truck Series points finish remains 22nd, recorded in 2020.
In 2021, Greenfield ran a sponsorship-limited schedule, failing to qualify for events at Daytona, Nashville, and Gateway, while producing a strong nineteenth-place run at Darlington Raceway. He later joined Spencer Davis Motorsports for the UNOH 200, continuing his collaborative approach to keep his program on track. He has since settled into the No. 95 with GK Racing, where he continues to compete in selected Craftsman Truck Series events.
NASCAR O’Reilly Auto Parts Series (2011)
Greenfield made his NASCAR O’Reilly Auto Parts Series (formerly the Nationwide Series) debut in 2011, driving the No. 71 for Rick Ware Racing at Atlanta Motor Speedway. He finished 35th in that event, which remains his only documented start in the second-tier national series. The appearance demonstrated his willingness to test himself in NASCAR’s upper divisions whenever opportunities arose.
GK Racing Era (2020-Present)
Greenfield operates GK Racing, his own Truck Series team, while also continuing to drive selected races behind the wheel. The 2020 return marked the beginning of this dual role, allowing him to manage car preparation, sponsorship, and race strategy as both owner and driver. Aligning with Chevrolet gave the program a reliable manufacturer partnership.
In recent seasons, Greenfield has balanced his driving duties with the responsibilities of running a small, owner-operator team. His 2025 campaign has featured part-time entries in the No. 95 Chevrolet Silverado RST, with the team listed for upcoming races. The arrangement reflects his long-term commitment to remaining competitive while building a sustainable, self-funded program.
Driving Style and Strengths
Greenfield’s strengths have traditionally been most visible on intermediate and superspeedway-style tracks, where his smooth throttle control and consistent corner-exit speed allow him to maximize his equipment. Working with veteran crew chief Jeff Hammond elevated his strategic awareness, and his willingness to share feedback as both driver and team owner has helped GK Racing improve race by race.
Notable Races and Milestones
Among his career highlights, Greenfield’s tenth-place finish at Daytona in 2012 stands as one of his strongest Truck Series results, while his practice-leading pace at Daytona in 2013 underscored his raw speed. His nineteenth-place run at Darlington in 2021, achieved with limited resources, reinforced his reputation for producing strong finishes in marquee events.
Clay Greenfield Career Wins
Across the NASCAR Craftsman Truck Series, NASCAR O’Reilly Auto Parts Series, and ARCA Menards Series, Greenfield has competed in dozens of national events without recording a victory. His results to date highlight a career built on perseverance, owner-operator grit, and the pursuit of a first trip to victory lane rather than a trophy case full of trophies.
Craftsman Truck Series Highlights
Greenfield’s best Truck Series points finish remains 22nd in 2020, a season that signaled his competitive return to the series. He has recorded at least two top-ten finishes, including the tenth-place result at Daytona in 2012, and has continued to log additional top-20 finishes in subsequent seasons with GK Racing.
Other Wins and Performances
Beyond NASCAR, Greenfield has collected results in the UARA-Stars Series and ARCA Menards Series, where his 12th-place ARCA debut at Salem in 2004 remains a career-defining early moment. He also recorded a top-ten ARCA finish during his 2020 return, reinforcing his ability to perform across multiple stock car platforms.
| Series | Wins | Top Tens | Poles |
|---|---|---|---|
| NASCAR Craftsman Truck Series | 0 | 2 | 0 |
| NASCAR O’Reilly Auto Parts Series | 0 | 0 | 0 |
| ARCA Menards Series | 0 | 1 | 0 |
Clay Greenfield Family
Family Background and Racing Lineage
Greenfield was raised in Clarksville, Tennessee, where he attended Clarksville Academy. Public details about his parents and broader family are limited, and there is no widely documented multi-generational racing lineage associated with his surname.
Personal Life
Greenfield has built much of his racing operation, GK Racing, around his home base in Tennessee, balancing his role as a team owner with his driving duties. Verified public details about his spouse, children, and personal life are not available.
2025 Season Performance
Greenfield’s 2025 NASCAR Craftsman Truck Series campaign is being run on a part-time basis with GK Racing, with him listed in the No. 95 Chevrolet Silverado RST for selected events. As of mid-season, his championship points position sits in the seventies, reflecting the limited number of starts he has been able to complete with sponsorship support.
His 2025 schedule has emphasized marquee tracks and events where GK Racing can field a well-prepared truck, including races where Greenfield has a realistic shot at a top-20 or top-15 result. The smaller race count allows the team to focus resources on each event rather than spreading efforts across the full 23-race calendar.
Looking ahead, Greenfield remains committed to his owner-driver model, with the long-term goal of eventually scoring his first national series victory. Continued Chevrolet factory support, a refined relationship with his crew chief group, and consistent finishes should keep GK Racing in the mix for additional Truck Series opportunities in 2026 and beyond.
