Junior career Mason was a silver medalist at the
2014 World Junior Championships in Athletics in the
110 metres hurdles in
Eugene, Oregon. His time of 13.05 seconds beat the Jamaican national junior record of
Omar McLeod set the previous year. In 2016, Mason won the bronze medal at the
2016 NACAC U23 Championships in Athletics in the 110 m hurdles, running 13.67 seconds to finish fourth on the day, later upgraded to a bronze medal after Puerto Rican race winner Will Barnes was disqualified due to a
antidoping rules violation.
Senior career In July 2023, Mason finished fourth at the
Jamaican Athletics Championships in
Kingston in the 110 metres hurdles in 13.22 seconds. Shortly afterwards, he finished third at the
Diamond League event in
Silesia in 13.29 seconds. The following month, competing in
Bern, Switzerland he ran a meet record 13.22 seconds to win the 110m hurdles event at the Citrus meeting at the
Wankdorf Stadium. He was named as an alternate for the Jamaican team which competed at the
2023 World Athletics Championships in
Budapest. In February 2024, he ran a new personal best
60m hurdles time of 7.65 seconds as he finished runner-up to compatriot
Rasheed Broadbell in
Fayetteville, Arkansas. He was subsequently selected to run for Jamaica at the
2024 World Athletics Indoor Championships in
Glasgow. In July 2024, he was officially selected as a reserve for the Jamaican team at the
2024 Paris Olympics. Mason ran 13.22 seconds for the 100m hurdles to finish third overall at the 2025
Jamaican Athletics Championships in Kingston on 29 June 2025. After being selected for the Jamaican team he won the bronze medal over 110 metres hurdles at the
2025 World Athletics Championships in
Tokyo, Japan, having equalled his personal best time of 13.12 seconds in both the semi-final and the final. ==Personal life==