Even when I was an orange belt, I always had to spar with black belts because I'm a HW adult (5'10", 250+). Back in '03, I was sparring a young Jr. Instructor (I was 33, he was 17yrs old, 6'2", longer reach, great puncher). and he threw a spin back kick that I moved right into, and BAM! - right in the face. I broke the Orbital bone under my left eye, and to this day I still have some nerve damage that goes into my teeth. Of course, when I showed up at work with a huge shiner and told the story, by the end of the day it was told that I got my butt kicked by a six year old, white belt girl. Tough crowd in my office.