Kaz Edward Grala ( ; born December 29, 1998) is an American professional stock car racing driver. He competes full-time in the NASCAR Xfinity Series, driving the No. 26 Toyota Supra for Sam Hunt Racing and part-time in the NASCAR Craftsman Truck Series, driving the No. 1 Toyota Tundra for TRICON Garage. He has also previously competed in the NASCAR Cup Series, NASCAR Pinty's Series as well as what are now the ARCA Menards Series, ARCA Menards Series East and ARCA Menards Series West. Grala is the youngest NASCAR winner in the history of Daytona International Speedway with his win in the 2017 Truck Series season-opener at age 18 and the youngest person to ever compete in an International Motor Sports Association (IMSA) event at age 15. Racing career Early career Grala, a native of Boston, started racing go-karts at F1 Boston in Braintree, Massachusetts, when he was four years old. When he was ten, he began racing Bandoleros, winning the Summer Shootout Championship in 2011. That same year, he won the New York Legendstock and the Massachusetts Bandolero Outlaws state championships. In 2012, Grala won 15 races and the Winter Heat Championship at Charlotte in the Legend Car Pro Division. In 2013, Grala made his late model debut in UARA-STARS, becoming the youngest winner in series history at Hickory Motor Speedway, followed by setting the record as the youngest driver to lead laps in the Myrtle Beach 400 where he finished second to Lee Pulliam. That same year, he was named by Speed 51 as the 2013 JEGS Rookie of the Year. NASCAR 2014–2016 In 2014, Grala competed in the NASCAR Whelen All-American Series and won at Caraway Speedway and Martinsville Speedway and also joined Turner Scott Motorsports to compete full-time in the K&N Pro Series East. He was the youngest driver in the series that year. In 2015, he joined Ben Kennedy Racing to race full-time in the K&N Pro Series East once again. In 2016, Grala made his NASCAR Gander Outdoors Truck Series debut at Martinsville for GMS Racing, driving the No. 33 Chevrolet. Grala would get his first career top-ten finish at Dover International Speedway in just his second start in the series. With Ben Kennedy joining the team, Grala moved over to the No. 24 truck to compete in seven more races that year. 2017 Grala ran the full Truck Series season in 2017 for