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6/8/2013 2:00 P.M. ET

Miami adds right-handed reliever Robinson

Miami made right-hander C.J. Robinson its 12th-round selection in the 2013 MLB First-Year Player Draft, taking the reliever 352nd overall.

If Robinson can duplicate the success he enjoyed for St. Johns River State College, then the Marlins will be adding a quality bullpen arm.

Robinson recorded a 1.56 ERA and struck out 47 batters in 34 2/3 innings as a sophomore, making one start and tallying 20 relief appearances.

Marlins select outfielder Johnson in 11th round

The Marlins led off Day 3 of the 2013 MLB First-Year Player Draft by selecting outfielder Coco Johnson with the 322nd overall pick.

Miami's 11th-round pick was a big bat in Louisville's lineup, leading the Cardinals with 50 RBIs during his junior season. He also hit eight home runs, batted .332 and boasted the team's second-best on-base percentage at .431.

2013 Draft Central

He also possesses good speed on the base paths, stealing 21 bases in his first year as a Cardinal and swiping 35 in two seasons at Central Arizona College.

Johnson, a member of the 2013 All-Big East second team, brings another quality outfield bat to an organization that already has Christian Yelich and Jake Marisnick waiting in the wings.

Johnson was the third outfielder taken by the Marlins in this year's Draft.

Kentucky infielder Riddle taken in 13th round

The Marlins made J.T. Riddle of Kentucky its 13th-round selection, taking the second baseman with the 382nd overall pick of the 2013 MLB First-Year Player Draft.

Riddle was taken in the 35th round of the 2010 Draft out of the Kentucky high school ranks by the Red Sox, but opted to attend his home state school.

He was named Kentucky's "Mr. Baseball" as a high school senior.

Three years later, he could be ready for the pro game as a solid middle infielder.

Riddle is a hot commodity -- a left-handed hitting middle infielder -- but the question remains just how much he'll hit after hitting .283 in his three years at Kentucky.

He does have a compact swing and if he can add some strength, there might be a little power coming.

He showed off his ability to make good contact and put the ball in play as a junior, striking out only 14 times in 245 plate appearances.

He runs well enough, but isn't a real threat to steal. Riddle plays second base now, but could handle shortstop at the next level and he could be looking at a future as a utility player.

Marlins pick first baseman Carcaise in 14th round

Miami selected Florida Tech first baseman Scott Carcaise in the 14th round of the 2013 MLB First-Year Player Draft with the 412th overall pick.

Carcaise was the big bat in the Panthers' lineup as a junior, earning a spot on the All-Sunshine State Conference second team after leading the league with 10 home runs.

He led Florida Tech in multiple offensive categories, including slugging percentage (.563), on-base percentage (.441) and RBIs (37). He recorded 10 multi-hit games and 11 multi-RBI games.

Carcaise was the second first baseman taken by Miami after Cal State Fullerton's Carlos Lopez was selected in the 10th round.

Fourth-rounder K.J. Woods, an outfielder, could potentially switch to first.

Miami uses 15th-round pick on outfielder Williams

The Marlins used their 15th-round selection on outfielder Miles Williams, making the Cal State, Northridge product the 442nd overall pick of the 2013 MLB First-Year Player Draft.

Miami sees power potential in Williams, who led the Matadors and tied for third in the Big West Conference with eight home runs as a junior. He accomplished the feat in only 93 at-bats due to a foot injury that sidelined him for 32 games.

Williams, who hit six home runs in 182 at-bats as a sophomore, is a .250 career hitter and has struck out 122 times in 340 career at-bats.

He was the fourth outfielder selected by Miami in this year's Draft.

Joe Morgan is an associate reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.