The teen phenom believes that maturity away from the park will lead to greater benefits when it comes time to take the field.

"I've grown up a lot," Adu told Fox. "I'm taking care of everything, living on my own, and I've asked my Mom when she visits not to stay for a long time."

"I want to be an adult and I want to be in an environment where I am able to handle a lot of my own things," he added. "My career is in my own hands, and I want to deal with adversity."

"I want to learn to be a pro."