Being stats mean more in baseball than any other sport, how or who decides how far the fences are for each stadium? It seems weird that since stats mean so much in baseball, you can have 20ft differences to the same spot of the field in 2 different stadiums. You might hit 20 HR in Yankee stadium to the short porch, but at Wrigley they would be pop outs. Also with Citi Field, they decided to bring the fences in, who has the final say so in that, do they have to run it by MLB, or it all their decision?