Looks like Citi Field is making pretty big changes to the fence dimmensions;
The 16-foot wall in left field will remain because it is structural, but a new 8-foot wall will be erected in front of it, a team source said.
The new left-field wall will not be constructed exactly parallel to the old wall. That would make it too close down the left-field line. Instead, a more modest reduction in depth will occur at the left-field foul pole, with a wider gap between the new and old walls in left-center.
Additional seating is expected to be added between the new and old walls, although there cannot be the same number of rows added throughout that area because of the different space between the walls in the corner versus in left-center.
In right field, where the "Mo's Zone" nook currently exists, the fencing will be moved closer to eradicate that crevice.
A dramatic change will occur in right-center, which had measured 415 feet from home plate. The new depth is expected to be 390 feet -- a 25-foot reduction.