Seth Hammaker

Seth Hammaker (born 29 September 2000) is an American professional Motocross and Supercross racer. Hammaker is a three-time main event winner in the AMA Supercross Championship.

Hammaker has been racing professionally in the AMA Supercross Championship and AMA Motocross Championship. For his entire career to date, he has competed for the Monster Energy Pro Circuit Kawasaki team in the 250 classes. Hammaker finished runner-up in the 250SX East class of the 2025 AMA Supercross Championship.

Hammaker took his first professional supercross win at Arlington in the 2021 season, in what was only his third race since debuting. After facing several stints on the side lines due to injury, he would not win again until the 2025 season.