A 26-year-old is not a prospect.

Pedro Leon of the Astros, in the second year of his prime, is hitting well at AAA. Note that he spent much of his career at AAA. Basically, he has old player skills, walking a lot and hitting for power. Those are good skills to have, but at 26 and in AAA, he better have some skills. He is not the future. He is a good AAA hitter who might fill a hole.