"During a news conference in September 1998, the team revealed plans to build a new stadium in Foxboro, keeping the team in Massachusetts. It was to be funded by the state as well as Kraft himself. This plan brought more competition from Connecticut, as a $1 billion plan to renovate an area of Hartford, including building a stadium.[24] Kraft then signed an agreement to move the team to Hartford on November 18, 1998. The proposed stadium included 68,000 seats, 60 luxury boxes, and had a projected cost of $375 million.[25] As before in Boston and Providence, construction of the stadium was challenged by the residents. Problems with the site were discovered, and an agreement could not be reached regarding the details of the stadium. The entire plan eventually fell through, enraging then Connecticut governor John G. Rowland, who lobbied hard for the stadium and spent weeks deliberating with Robert Kraft.[26] Rowland announced at a press conference that he was officially "a New York Jets fan, now and probably forever".[27] In 1999, the team officially announced that it would remain in Foxboro, which led to Gillette Stadium's construction.[28] After the Hartford proposal fell through, Robert Kraft paid for 100% of the construction costs, a rare instance of an NFL owner privately financing the construction of a stadium."

On May 15, 1999, then Red Sox CEO John Harrington announced plans for a new Fenway Park to be built near the existing structure.[33] It was to have seated 44,130 and would have been a modernized replica of the current Fenway Park, with the same field dimensions except for a shorter right field and reduced foul territory. Some sections of the existing ballpark were to be preserved (mainly the original Green Monster and the third base side of the park) as part of the overall new layout. Most of the current stadium was to be demolished to make room for new development, with one section remaining to house a baseball museum and public park.[34] The proposal was highly controversial, and several groups (such as "Save Fenway Park" formed in an attempt to block the move.[35] Discussion took place for several years regarding the new stadium proposal. One plan involved building a "Sports Megaplex" in South Boston, where a new Fenway would be located next to a new stadium for the New England Patriots. The Patriots ultimately built Gillette Stadium in Foxborough, Massachusetts, their home throughout most of their history, which ended the Megaplex proposal. The Red Sox and the city of Boston failed to reach an agreement on building the new stadium, and in 2005, the Red Sox ownership group announced that the team would stay at Fenway Park indefinitely.[36] The stadium has since been renovated, and will remain usable until as late as 2061.[37]