Joe DeCarlo, a 6-foot-1, 210-pound senior shortstop from Garnet Valley, was chosen by the Seattle Mariners (No. 64 overall) in the second round of baseball's first-year player draft.
DeCarlo, projected to be a third baseman at the next level, hit .460 for the Jaguars this season and was a first-team all-Central League pick.
The 18-year-old, from Glen Mills, has a scholarship to play at the University of Georgia.
DeCarlo, a righthanded hitter and thrower, also served as a closer for Garnet Valley.
Wake Forest junior southpaw Tim Cooney, from Malvern Prep, was picked in the third round (No. 117 overall) by the St. Louis Cardinals.
South Carolina junior first baseman Christian Walker, a Kennedy-Kenrick graduate, went to the Baltimore Oriloes in the fourth round (No. 132 overall).
The signing date for players selected in the first-year player draft is July 13.
DeCarlo plays summer baseball for the Midland Redskins, a showcase squad based in Cincinnati, Ohio.