Tom Sizemore was 26 in Lock Up when he played the character 'Dallas'.
That was over 35 years ago in 1989.
This was his first recorded movie acting credit (although may not technically be his first actual acting role).
Today he is 62, and has starred in 196 movies in total, 182 of those since Lock Up was released.
In Lock Up, I think Tom Sizemore looks: