In 2014 Clayton competed at the
NACAC U23 Championships in
Kamloops, where she won bronze medals in the 4x100 m relay and 400 m hurdles. At the
World Championships in
Doha, Clayton claimed a shock bronze medal in a big personal best of 53.74 s, her first time under the 54-second barrier. She was unable to compete for the majority of the 2021 season due to a leg injury. But returned in the 2022 season, finishing sixth at the
2022 World Championships. Clayton also placed fourth at that year's
Commonwealth Games. She set a personal best to win her first
Diamond League in
Monaco, clocking 53.33 s. She ended her season by setting a meet record of 53.89 s at the
Hanžeković Memorial. In 2023, Clayton finished third at the Jamaican Championships to qualify for the
World Championships. At the Championships, she won the bronze medal in a personal best of 52.81 s. On 2 September, she won at the
Xiamen Diamond League leading a Jamaican 1-2-3 with compatriots
Andrenette Knight and
Janieve Russell. On 13 April 2024, Clayton set a new personal best of 51.81 s over 400 m at the Tom Jones Memorial in
Gainesville. She set a new personal best over 400 m hurdles in winning the 2024 Jamaican Championships, with a time of 52.51 s. On 22 October 2024, Clayton signed with
Grand Slam Track to be a Racer for the 2025 season. ==Statistics==