Morales reached the Major Leagues with the Los Angeles Angels in 2018, appearing in one game and recording one out. That appearance was the culmination of a nine-year journey through the minor leagues, beginning in 2010 when Morales was signed by the Seattle Mariners as a 17-year old international free agent. He reported to the Mariners Venezuelan Summer League affiliate that year, and ultimately spent four seasons at the level, posting a sparkling 1.69 ERA in 79.2 innings over that span.

After spending the 2014 season in the rookie-level Arizona League, Morales got his first taste of full season experience the following year with Class-A Clinton. The native of Villa de Cura, Venezuela, earned another promotion to High-A Bakersfield in 2016, and navigated the notoriously hitter-friendly California League to the tune of a 3.69 ERA over 102.1 innings. Following the 2016 season, the Angels signed Morales as a minor league free agent, splitting his 2017 campaign between Double-A Mobile and Triple-A Salt Lake. The righty made his big-league debut against the Texas Rangers on August 16, 2018, allowing an infield single before retiring Elvis Andrus to end the inning. Morales was returned to Triple-A the following day, and spent the remainder of the 2018 season in Salt Lake.

Morales has pitched in the Venezuelan Winter League in each of the past six off-seasons, all with the Cardenales de Lara. Morales and Railroaders teammates Jesus Sanchez and Angelo Palumbo helped the Cardenales advance to the Caribbean Series this winter, with Morales compiling a 2.95 ERA in 18.1 innings for Lara. The 27-year old made two scoreless appearances for the Venezuelan club in the Caribbean Series, both times pitching in relief. 

For his career, Morales owns a 35-33 record and 3.89 ERA in 236 games, 92 as a starter. Over 680.2 innings, he has allowed 663 hits, striking out 679 while walking only 234 (2.9:1 ratio).