"Underlayers"

Did you know that "Nike is the official underlayer provider for Major League Baseball?"

That's funny, I thought it was Jockey.

Anyway, they're really proud of some new futuristic shirt they've invented:

Nike has outfitted a few key players from Boston's Mike Lowell to Colorado's Matt Holliday with new compression shirts, which are designed to support key muscles used by baseball players. And it's part of Nike's own World Series of sorts with competitor Under Armour, which pioneered the compression garment sector.

The company said the shirt is one of the top achievements in its Nike Pro business.

After getting caught with his legs in cement last night, Holliday had better hope that Nike is working on some compression pants too.