Baseball Catcher Detection

Baseball Catcher Detection

I'm trying to recognize catcher in the movie using OpenCV, it is like
image below. I searched some ways to recognize objects... Algorithms that
need standard image seems not suitable because there is no standard of
'catcher', unlike trump cards.
I am trying to use edge detectors like Canny, but I don't know how can I
detect the 'shape of edge' of a catcher. Is there any good way to detect
certain shape of edge in OpenCV? or other algorithms that can be
implemented in this problem??(detecting catcher in baseball movie clip
like below) Maybe this is too hard because catcher is too small in the
movie..
Thanks.
Image Link :
https://fbcdn-sphotos-b-a.akamaihd.net/hphotos-ak-prn2/p480x480/1375033_525736007505068_2139086176_n.jpg