Why does Russell Martin wear that blue tape around his wrists?

Question

always wanted to know (:

whats it called and what does it do??

http://media.photobucket.com/image/russell%20martin/montoursville35/RMartin.png?o=1

Answer 1

Why did u ask this in basketball?  He tapes his left wrist since he's a catcher and it keeps his wrist from going into awkward positions.  U need some help catching 90 mph pitches.