(Portland, OR) -- The due diligence period is being extended for a possible baseball stadium on port property. The Portland Diamond Project and Port of Portland agreed to extend the timeline yesterday. They said Terminal 2 remains the preferred site for a ballpark and mixed-use development as part of the efforts to bring a Major League Baseball franchise to the city. The Portland Diamond Project will pay the Port of Portland over 37 thousand dollars for each additional month of due diligence.