I know that I might take some heat here, but I just got back from the Cal State Fullerton vs Navy match and was disgusted in the way that Fullerton won the dual.
They won 21-17 overall, but the score was 15-17 going into the last match and the Navy wrestler was winning and the Fullerton guy was givng up, then they collided heads (I personally did not think it was illegal) and the refree called an illegal head butt on the Navy guy. They awarded the point and the Fullerton took his time on the side of the mat. Dan Hicks (Fullerton Head coach) then came over and had the trainer check him out, the wrestler said he was ok and he was able to follow the trainiers finger with his eyes just fine.
Then all Hicks started to wave his hands and say he was done. The wrestler jumped up and was willing to wrestle but the coach said no, thus giving them the match (6 points) to Fullerton and winning the dual.
I thought it was very unsportsman like and that the Navy was robbed of a very good dual. They pushed Fullerton's gas tanks and wore them out on their own mat.

I know there is times when you should not let your athlete continue, but this was not one of those times. It was clearly their only shot to win the dual and they took the weak way out.