Reports for months now have indicated that the Mets will change Citi Field’s dimensions for next season, not so much to turn it into a hitter’s park, but to make it more of a neutral park. But the official announcement is reportedly coming after the World Series ends, and MetsBlog reports that work has already begun. (Matthew Cerrone’s sources say the new distances have already been marked on the ground.) So what’s expected to change? According to Adam Rubin, a new left-field wall will be constructed in front of the current one, though they won’t be exactly parallel. (The gap between the fences will be wider in left-center than at the foul pole.) That unnecessary nook in right will be eliminated. And most dramatically, the distance to the fence in right center will be decreased from 415 feet to 390 feet. [MetsBlog, ESPN New York]