Bellatti had his contract selected by the Marlins on Friday.
Bellatti had a two-game stint in the majors in July before being designated for assignment, and he'll rejoin the Marlins for the final three games of the season. The right-hander dominated at Triple-A Jacksonville out of the bullpen with a 1.52 ERA, 0.86 WHIP and 38:10 K:BB over 29.2 innings.