Dimension changes are officially coming to Petco Park in 2013, changes the Padres hope will allow their downtown ballpark to play more fair offensively moving forward. The team announced on Monday that the modifications will affect left-center, right-center and right field. Construction is set to begin this week. The changes will include: • Moving the wall that runs from the right-field porch to right-center field in 11 feet. The wall will also be lowered to match the height of the sub-8-foot wall in left and center field. • The out-of-town scoreboard in right field will be relocated. There will be seating modifications in that area that will be announced later. In right-center, the wall will go from 402 to 391 feet. • The wall in left-center field will be moved in from 402 to 390 feet.