Spencer Breslin was 7 in The Kid when he played the character 'Rusty Duritz'.
That was over 24 years ago in 2000.
This was his first recorded movie acting credit (although may not technically be his first actual acting role).
Today he is 31, and has starred in 19 movies in total, 18 of those since The Kid was released.
In The Kid, I think Spencer Breslin looks: