Actually, I'm not. But nothing stops me from proclaiming it. Of course, anyone that knows me will say that I'm off my rocker, but still, I can make any statement that I want about myself.
I think Christians get a bad rap because of this exact scenario. I can call myself a Christian, but that doesn't really mean that I'm playing for that team. There are a lot of people out there wearing the Christian jersey and giving the Christian team a bad name.
So, before you go judging the NFL based on my time in the 40 and my ability to catch a pass against a professional DB, make sure I'm really on the team. I just ask that you do the same when you're judging Christians.