What is it with the stopwatch?

I watched the Pride Bushido3 on PPV Sunday and found it quite good.I thought "The Punk" got robbed in the last fight though.
Because I am new to this somewhat I was hoping for some clarification on what the announcer/sometime judge was talking about when he said "as a fan he picked Minowa ,but as a judge I would have to have looked at what was on the stopwatch".I'm sure that is not the exact quote but it is similar to what I heard him say.

Forgive my ignorance and thanks in advance.