The Padres will promote Double-A left-hander Adrian Morejon to the majors Saturday, Dennis Lin of The Athletic reports. The club’s 40-man roster is full, so it will need to make a corresponding move to clear a spot for Morejon.

Now 20, Morejon is three years removed from joining the Padres for a whopping $11MM bonus as an international free agent out of Cuba. Morejon has been somewhat injury plagued since signing that deal, ESPN’s Keith Law recently noted (subscription required), yet he’s still considered one of the game’s most exciting farmhands. Both Baseball America (No. 46) and MLB.com (No. 49) rank Morejon among the majors’ 50 best prospects. In their free scouting report, Jim Callis and Jonathan Mayo of MLB.com laud Morejon’s arsenal – which includes a mid- to high-90s fastball, two above-average kinds of changeups and a curveball – and add he could become a mid-rotation starter or better in the majors.

Morejon will work out of the bullpen in his first major league action, according to Lin, as he’s not stretched out to start in the bigs at this juncture. He has combined for just 36 innings in 16 appearances this year at the Double-A level, where he has posted a 4.25 ERA/3.69 FIP with 11.0 K/9, 3.75 BB/9 and a 50.6 percent groundball rate.

Morejon’s presence will give the slumping Padres a second lefty reliever to join Matt Strahm in a righty-heavy relief setup. In the event he stays up through the season, Morejon will accrue 71 days of service time.