Keller is a 6’3” and 195 pounds pitchers who ranks number 13 on the site’s prospect rankings. Keller was drafted by the Pittsburgh Pirates in the 2nd round of the 2014 MLB Amateur Draft, in which he was ranked as the 65th best prospect. He was drafted out of Xavier High School in Iowa. With that, the now 20 year-old, signed for a bonus of one million dollars which was over slot value.
Pre-Draft
He was committed to University of North Carolina. Obviously, the Pirates were able to sway him to not attend there, and he started pitching in the organization at the end of 2014.