Thomas Ian Griffith was 26 in The Karate Kid Part III when he played the character 'Terry Silver'.
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 23 movies in total, 22 of those since The Karate Kid Part III was released.
In The Karate Kid Part III, I think Thomas Ian Griffith looks: