Super Mega Baseball 2

From the main menu, click on Play!. Click Customize. This will bring up two options, one for Teams and one for Leagues. Click on Teams. Click on Edit Team. Click on Name/Logo/Colors. You can edit any team. I used Logmen since it is the first one that shows up. Move the cursor to the right onto the PRIMARY LOGO (for Logmen, a green lumberjack with a chainsaw). Click and enter any text you want for your logo. Press when you are done and the achievement should unlock. You don't have to save if you don't want.