 Stewart also ran the second leg of the Jamaican 4 × 100 m relay team, which finished seventh in 38.75 s.

Stewart won the 100 m Jamaica National Championship in 10.37.In the Nassau CARIFTA Games Stewart won both the Under 20 Men 100 m in 10.2 s, and the 4 × 100 m relay in 41.0 s.

At the 1984 Olympics in Los Angeles Stewart won a silver medal with the Jamaican relay team.Running the anchor leg in a timed 9.28 s, Stewart passed the Canadian Sterling Hinds and crossed the line to record a finishing time of 38.62 In addition to that he came sixth in the 100 m final, his time 10.29 with 0.2 m/s wind.