He lowered the previous world record 3 : 48.31 set by Tunisia 's Abderrahim Zhiou at the 2012 London Paralympics .
At the Sydney Grand Prix on 18 March 2018 , Clifford broke the Men 's 1500m T12 world record with a time of 3 : 45.18 .
Clifford lowered the previous world record 3 : 48.31 set by Tunisia 's Abderrahim Zhiou at the 2012 London Paralympics .
At the Sydney Grand Prix on 18 March 2018 , Clifford broke the Men 's 1500m T12 world record with a time of 3 : 45.18 .