Heyman hit .377 with 24 doubles, eight homers and 43 RBIs for the College of Southern Nevada this season. He was 12-for-12 in the stolen base department.
Those offensive numbers mean a little more to scouts given that the league Southern Nevada is in uses wood as opposed to aluminum bats.
"He certainly has raw power," D-backs scouting director Ray Montgomery said of Heyman, who was scouted by Doyle Wilson. "One attractive quality for us is that he's been swinging the wood all season. So he has the ability to swing the wood bat, which we like."
Heyman was initially selected by the Blue Jays in the 11th round of the 2012 Draft, but elected instead to go to Miami. After one season with the Hurricanes, though, he transferred to Southern Nevada.
"It's been a good experience," Heyman said in a recent interview. "In high school I was a three-sport guy. It's only the last few years that I played just baseball. I'm not as raw anymore. I feel my raw talent has turned into refined talent."
The Draft concludes on Saturday, with exclusive coverage of Rounds 11-40 beginning on MLB.com at 10 a.m. MST.
Steve Gilbert is a reporter for MLB.com. Read his blog, Inside the D-backs, and follow him on Twitter @SteveGilbertMLB. Adam Lichtenstein is an associate reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.