I must post that many here have experienced the baseball shape by dry jelqing. I recommend 2 handed wet jelqing in the the shower with conditioner or what ever lube you want to use. I am one that did see the beginning of a baseball bat early in my PE and corrected it. Just because it started with some of us does not mean it will happen to you.
If you are going to PE, be aware of what you are doing to yourself. If things look baseball, stop what your doing and change your routine. You can see your penis changing when you are gaining, or at least we did (wife and I). This is easy, Thunder has a lot of exercises here to try. I say 2 handed wet Jelq with lube and in the shower.