Merrill attended Azusa Pacific University where he competed on the school's NCAA Division II track and field team.

[1][2] Merrill represented the United States at the 2016 Summer Paralympics in the men's long jump T44 event and finished in fourth place with an American Record of 6.84-metres.

[3] He represented the United States at the 2019 Parapan American Games where he won a gold medal in the long jump T63/T64 event.

[4] Merrill represented the United States at the 2020 Summer Paralympics in the men's long jump T64 event and won a bronze medal.

[5] He competed in the men's long jump T64 event at the 2023 World Para Athletics Championships held in Paris, France.