I saw this on D.C. United's page today. Some guy (with a LOT of time on his hands) re-imagined MLB uniforms as soccer jerseys (or "kits" as we Eurosnobs call them). 

As a fan of soccer and baseball, I LOVE THIS!

Some of them are really nifty looking (yeah, I use "nifty" in my everyday conversation, what of it?) and he writes a few paragraphs on each team to explain why he chose the particular designs. 

Here are a few of the NL East designs. Click any of them to see all of the baseball soccer jerseys. 

And just for fun, here's the O's.