The right-hander appeared in 23 games, posting a 1-0 record with a 1.27 ERA and four saves.
Hatcher now is in position to make an impact at the big league level.
The Marlins on Saturday placed reliever Sandy Rosario on the 15-day disabled list with a right quad strain. Hatcher was recalled from New Orleans to fill his roster spot.
The move was expected after Rosario exited Friday's game in the eighth inning.
A converted catcher, Hatcher appeared in 11 games with the Marlins last year, tossing 10 1/3 innings with eight strikeouts and four walks.