Pentecost, a 6-foot-1, 190-pound catcher, is a junior at Kennesaw State, which is playing Louisville this weekend in the NCAA Super Regionals.
Pentecost, 21, the son of Wanda and Maxwell Sr. Pentecost, was batting .423 with 9 home runs and 58 RBIs in 62 games for the Owls.
He is the highest baseball draft selectee from Kennesaw State, the school said.
"It's a feeling that's hard to put into words," Pentecost of the selection in a Kennesaw State press release. "It's a great feeling to know that all the hard work and time you've put in in the past has paid off."
Sprayberry senior Michael Chavis also was selected in the first round, picked 26th by the Boston Red Sox.
Chavis was the Gatorade Georgia Baseball Player of the Year for this past season after hitting .573, with 13 home runs, 39 RBIs and 30 runs scored.
A Clemson signee, Chavis could end up playing third
base or second base within the Red Sox organization.