Download the file and unzip it.
With OOTP closed place the resulting PRMLB.lg in your OOTP14 Saved Games folder.
On a PC this is located in My Documents/Out of the Park Developments/OOTP Baseball 14/saved_games
On a Mac this is located in Library/Application Support/Out of the Park Developments/OOTP Baseball 14/saved_games
To get to the library folder, go into the finder, click the ‘go’ menu and hold down the option key and library will appear as one of the options.
Launch OOTP and click Load saved game, and chose PRMLB.
Your password was provided via email.