One of the longest-tenured players in the Marlins organization, Soriano finally reached the upper minors last season. He also transitioned from starting to a bullpen role. After 29 innings pitched for Double-A Pensacola, he made the permanent move to Triple-A Jacksonville in early June and spent the remainder of the season there.
In his 32 Jacksonville appearances (all of them in relief), Soriano posted a 2.49 ERA and 3.76 FIP, but a 5.04 xFIP. Despite being a fly-ball pitcher, Soriano allowed only two home runs at Triple-A (47.0 IP). Opponents had an unlucky .259 batting average on balls in play.