O'Brien had his contract purchased from Triple-A New Orleans on Tuesday, Andre Fernandez of the Miami Herald reports.

O'Brien was traded from the Dodgers to the Marlins back in June. The 28-year-old has spent the entire season in the minors, slashing a combined .216/.330/.506 with 30 homers across 110 games between Double- and Triple-A. He'll serve as a right-handed power bat off the bench for the Marlins. O'Brien owns a career .176/.228/.446 slash line with six homers across 79 big-league plate appearances.

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