I'll play in your "expert" league if you still have the extra spot. Not sure what my Yahoo winning percentage is but if you are wondering about my committment to a league and my "expert-ness", go to http://www.fantasybaseballexpress.com
This is a free website that I have created from scratch. I will also be featured in the Expert Mock Draft in the 2nd edition of Fantasy Baseball Magazine that comes out this spring. If that doesn't convince you, I dont know what will.
If I am in, email me back the details, league page etc.