Haha, there's no such thing as a good excuse. You can get kicked in the crotch by Sebastian Janikowski, a loss is a loss, I'm sorry to say.
Still, they're all valid points.
I'd never heard the dengue fever defense for the Sokky fight, but I think "he got punched in the face really f*cking hard" is a better explanation for why he lost.
So, Fedor lost to Kohsaka?
"He who defeats himself is the mightiest warrior" - Confucius(I think)