Posting up some 2020 updated ESPN Portraits for 2K12, but before you install please take time to read everything. While every portrait from the MLB 26-Man Rosters (https://www.rosterresource.com/mlb-depth-charts) are included, they are not Portrait ID'd, but rather sorted by last name. This is to avoid any misalignment and ID confusion between rosters. Simply rename the files to your corresponding portrait IDs and the rest is ready to go.
Included in the download is a folder containing all properly formatted and exported .DDS. Also included is another folder placed to create a portrait .zip file to be able install the pack. A video is included down below to help with any confusion.