Substantial dimension changes to Citi Field will be announced after the World Series, in an effort to make the 3-year-old ballpark more hitter-friendly, a team official confirmed.

Citi Field allowed 1.33 homers per game last season, which ranked 14th among 16 National League ballparks, ahead of only San Francisco's AT&T Park (1.00) and San Diego's Petco Park (1.23).

New York Mets general manager Sandy Alderson said last month that the intention was to make Citi Field more neutral -- not to tilt the balance in favor of hitters.