Why is this so special? R.A. Dickey will make his Mets debut in less than an hour, taking over Oliver Perez's roster spot. Dickey will be the first starting pitcher in Mets history who goes by initials, and he'll be one of a very few knuckleballers to take the hill for the Metrolpolitans.
Aside from a spring training appearance or two, I've only watched R.A. Dickey pitch once. That one game was a gem. After giving up a leadoff single, Dickey set a Buffalo Bisons record by setting down the next 27 batters in order. SNY really picked a great game to broadcast!
The Mets will be Dickey's fourth major league team. He made his debut with the Rangers in 2001. He also pitched for Seattle and Minnesota. He's got a 22-28 lifetime major league record with a 5.43 ERA.
I can't really make out any letters in the signature, but that's not exactly unusual with modern players.
I'm only putting autograph-related links in this blogroll. However, if you have a blog or a collector site not specifically about autographs, but with an autograph page or an "autograph" label on your blog posts, I'll put that link here.