If you are beginning Java, please write your own Layout code, and don't rely on the tools with NetBeans.
If you want a list of teams, set up those teams names as an array (or List) and iterate through the array and set up radio buttons as anonymous objects. That way you can have sensible results if you change the number of teams suggested.
And welcome to JavaRanch
I have a knack for fixing things like this ... um ... sorry ... here is a consilitory tiny ad: