Molina was signed out of the DR at the young age of 17 in 2012. The Mets kept him on the island to play in the Dominican Summer League. He went 5-2 with a 3.58 ERA and earned himself a call-up to the Gulf Coast Mets for the 2013 season.
Molina was not as sharp, he had a 4.39 ERA and faced some control problems in his first year in professional baseball. In 2014, Molina put together a terrific season for the Brooklyn Cyclones. He put up a 7-3 record with a 1.77 ERA, fixing his control problems and earning organization, short season, and Baseball America All-Star honors.
His 2015 season was cut down after only 9 appearances because of Tommy John Surgery. He would miss the entire 2016 season but still remained as the number six prospect in the Mets organization. Molina rebounded strong in 2017, to pitch 106.2 innings and had a 3.21 ERA with the St. Lucie Mets and Binghamton Rumble Ponies.
Molina figure to start the season in either Binghamton or Las Vegas with the large amount of starting pitchers the Mets have but with their injury history anything is possible. Molina has pitched 5.1 innings, allowed four runs and allowed a lot of solid contact. With Molina still young the Mets will likely have him spend another season in the minors before they think about bringing him up to the big leagues.