In 103 games over four seasons with the King varsity team, the 17-year-old Mardirosian batted .383 with four homers and 60 RBIs. A left-handed hitter, he batted .347 in 25 games as his team's shortstop.
"We really liked the way he swings the bat," Reds senior director of amateur scouting Chris Buckley said. "He runs very well. It's very hard to find left-handed-hitting middle infielders. It's like finding a left-handed-hitting catcher. It's hard to do for whatever reason."
Currently, Mardirosian has signed with UC Santa Barbara to play collegiate baseball.
The Draft concludes Saturday, with exclusive coverage of Rounds 11-40 beginning on MLB.com at 1 p.m. ET.
Mark Sheldon is a reporter for MLB.com. Read his blog, Mark My Word, and follow him on Twitter @m_sheldon. This story was not subject to the approval of Major League Baseball or its clubs.