In addition to the list of teams I would like to add my method for making this tedious achievement go reasonably faster. In settings choose Easy Difficulty & 3 inning game.
1. Make sure you choose the Home team so you don't have to bat the botttom of the 3rd Inning.
2. Choose any team for yourself since it does not matter.
3. Choose Toph as your pitcher, he has a 5 star Fastball.
4. After choosing Toph hit LT to randomly pick the rest of your team.
5. You will pitch first. To build up turbo keep firing perfect or nearly perfect fastballs (A) into the batters "hot zone"
6. When you get to your first at bat. Use turbo (RT) for the 1st 2 batters for homeruns. That should be enough runs to win the game.
7. With the rest of your batters simply hold X to bunt. This makes it faster as the pitcher will usually only throw one pitch & you will prevent the CPU from building any turbo..
8. Just keep firing in those fastballs & bunting for the rest of the game. If they happen to score you should have plenty of turbo to keep them behind.
Also any teams that you beat in the Tournament count towards this achievement. Check your Unlocked cards if you forget which teams you beat.