Easy money
Use the following trick to get a lot of money in Franchise mode. Go to your calendar before a home game. Make the normal choices needed to play a game (controller, pitcher selection, etc.). Then at the line up screen, exit all the way back to your calendar. You will receive the revenue for that game. Repeat this as many times as desired. It is a good idea to only do this on home games as you will receive the advertising, ticket, and concession revenue. For example, with a team like Kansas City or Tampa Bay you will only get small amounts but it will increase your attendance. Also, do not use during spring training as you will receive no money and also on opening day.