Trots star Smoken Up finally showed his mettle in yesterday's Miracle Mile at Menangle's Tabcorp Park.

Driver Lance Justice had confidently predicted his pacer could beat Blacks a Fake before the race and Smoken Up did not disappoint, breaking through to win Australia's premier harness sprint race by sitting outside four-time Inter Dominion champion Blacks A Fake.

It was a nail-biting finish as Smoken Up's last stride placed him first by a half-head and also broke the record for the fastest mile in the southern hemisphere with a time of  1min 50.4sec.