2023
• Hammaker's start to the season was much later than expected after suffering an injury in preparation for the supercross season. He made a full recovery and debuted in 2023 at the infamous RedBud where he finished eighth. Hammaker's successful second-half of the season helped him qualify for the SuperMotocross Playoffs after finishing 11th overall during the Pro Motocross season. He ended up racing two of the three events, finishing 15th overall.

2022
• After back-to-back podiums to start the 250SX West Region season, Hammaker sustained injury during practice. He worked hard to return for a full Pro Motocross season, starting well with consistent races in the top-10. He claimed a career-best of sixth overall at his hometown race at High Point, going on to claim another two top-six overall finishes.

2021
• Hammaker came out in 2021 on fire and ready to make an impression. Throughout the supercross season, Hammaker claimed his first-ever supercross main event win in Arlington, along with two additional podium finishes. All that earned him the amazing honor of being awarded the 2021 AMA Supercross Rookie of the Year trophy. His motocross season was plagued with injury, but if his rookie season is any indication of his potential, it's going to be an exciting 2022.

Amateur Career
• Seth's final year as an amateur was cut short with an illness, but his stats coming into his pro debut are impressive. Before racing went on hiatus, Seth took the title in the Open A class at the Ricky Carmichael Supercross in Daytona. He also collected second in the 250A. Seth has also won the All-Stars class of the 2017 Monster Energy Cup, following it up with a fourth the next year.

Career Wins
• 1 250SX win