Many disputes have surfaced over a so-called "Bug" at the Polo Grounds. A kind and wise soul 
named Douglas has emerged to explain just what the deal is with the Polo Grounds. There has been
much speculation ranging from "An Error" to "A bug" to "What idiot modeled this thing!?". Welp, 
here are the facts folks. Thanks to Douglas for be so gracious as to include a picture as well.
 

"Here is an explanation for the left field foul pole. From home to the wall in left the distance 
is/was 458 ft.  In 1923, seating was added to the Polo Grounds to increase capacity.  When this
was done, the upper deck in left overhung the playing field by at least 20 feet (some sources 
say 21, others 23, and there are probably more that say different).  Making the distance to the 
upper deck due to the angle about 450 ft.  The foul pole was never out on the playing field.

The programers got the overhang correct and probably in doing so, would have been unable to 
accurately represent the two distances.  Therefore the pole is about 20 feet away from the wall 
and in play (I have had balls carom off of it).  Outfielders need to to run in front of the 
pole to pick up any balls in the other side.  The best guess for this would be that the game 
treats (all) the foul poles as being against the wall and would require the fielder to run in 
front of it. 

By taking a virtual tour through the stadium, the camera can pass between the pole and the wall,
but angled correctly, it stops against the pole.  But that doesn't matter as there is a triangle
shaped area behind the pole where players cannot enter (the Polo Grounds Triangle, if you will).  
Any ball that enters this zone is 'ejected' immediately. Close inspection on the instant replay 
reveals a kind of warp.  A player may enter into the zone, but would have to dive into it.  This 
leads to the conclusion that anything that crosses into the zone in the air passes easily into or 
out of the zone.  Anything attempting to enter while on the ground (running fielder or rolling 
ball) will stop or bounce. 

Perhaps a future patch can correctly fix this, but more than likely it would cause bigger problems
at the 37 other stadiums.  Thinking of it as a quirk in the ballpark rather than the program is 
probably the best 'fix'.


Douglas"


Here is the included picture:

                   

Thanks again Douglas!!!