Ups and downs are inherent to life, which means you're not immune if you're an MMA fighter and your name happens to be Amir Sadollah.
Since May 2010, "The Ultimate Fighter 7" winner has an even 2-2 record.
Mixed results aren't ideal in a cutthroat business. You never know what could happen following a loss. Sadollah is safe at the moment - but definitely shouldn't get too comfortable.