[6][7][8][9] On March 17 at the Bob Hayes Invitational in Jacksonville, Florida, Williams broke the world age-15 record in the girls' 100 metres, winning in a time of 11.13 seconds.

[13][5][14] At the 2019 CARIFTA Games in April, Williams again tripled in the 100 m, 200 m, and 4 × 100 m relay to win three gold medals in the under-20 category.

While she was ruled to be not at fault and received no period of ineligibility to compete, her results from the Jamaican Championships were deleted from the records.

[25] In June 2021, Williams placed fourth at the Jamaican National Championships with a time of 11.01 in the 100 metres, thus not qualifying for the 2020 Summer Olympics in that event.

[10][11][12][15][16] For her athletics achievements in 2018 she was nominated for the IAAF Female Rising Star and the Laureus Breakthrough of the Year awards.