In the AFL notebook, they spend some time talking about Brad and his stuff:

They talk about his need to develop a 3rd pitch aside from his 88-91 mph sinker & slider.

Quote

“For me, this is a late-round guy who wanted to get noticed,” said a scout from an American League club. “And he did, but at the expense of his development in some ways. Yeah, the sinker is good and the slider could be an out pitch for him. But his arm speed and location make his changeup a below-average pitch. He shows some potential with it sometimes, but this is a two-pitch guy for the most part.”