DENVER -- The Arizona Diamondbacks went for youth on the first day of the draft, selecting four teenagers Thursday.

Topping the group was 17-year-old right-handed pitcher Touki Toussaint out of Coral Springs Christian Academy in Florida, who was selected 16th overall.

Toussaint previously signed a letter-of-intent to play at Vanderbilt, but he said he would discuss his options with his family.

The Diamondbacks hope being a mid-first-round pick will convince him to turn pro.

"We had him ranked in the top five pitchers in the draft. Tremendous upside, relatively new to pitching and a great athlete," Arizona general manager Kevin Towers said. "Kind of reminds me when you watch him on video of a young Bob Gibson. The ball comes out of his hand real easy. He's got a power breaking ball, a fastball in the mid-90s.

"Once our development people wrap their arms around him, he's a kid that has a chance to be a top-of-the-rotation-type starter. We profile him to be a No. 1 or 2 type starter in the future. We're excited he slid to us."

Toussaint's fastball has touched 97 mph. He also has a good curveball with a lot of break.

The Diamondbacks took left-hander Cody Reed (Ardmore High School in Alabama) with their second-round pick, 54th overall. In the Competitive Balance Round B, they selected outfielder Marcus Wilson (Junipero Serra High School in Gardena, Calif.) and shortstop Isan Diaz (Springfield Central High School in Massachusetts).

"We really wanted to take an arm first," Towers said.