Uzair Rehman gained his first international experience at the 2018 Asian Games in Jakarta , where he was eliminated in the first round of the 200-meter run with 21.70 seconds and also competed in the Pakistani 4-by-100-meter relay with 40, 56 s failed to qualify for the final. In the year he was eliminated from the Asian Championships in Doha in the 100-meter run with 10.77 s in the run and reached the semi-finals over 200 meters, in which he was eliminated with 21.48 s. At the beginning of December he won the South Asian Games in Kathmandu over 200 meters in 21.15 s and was fourth over 100 meters in 10.70 s. He also won the bronze medal behind the teams from Sri Lanka and India with the relay in 40.50 s.
In 2017 and 2018, Rehman became Pakistani champion in the 4 x 100 meter relay and in 2018 in the 100 and 200 meter run.
Personal best
100 meters: 10.70 s (0.0 m / s), December 3, 2019 in Kathmandu
200 meters: 21.15 s (−0.3 m / s), December 4, 2019 in Kathmandu