The moves were made to make room on the 25-man roster for the return of right-hander Brandon Morrow from the 60-day disabled list and shortstop Yunel Escobar from paternity leave.
Hechavarria and Gose were both pressed into Major League action earlier than expected this season because of injuries. They originally weren't expected to arrive until rosters expand at the beginning of September, and both are still likely to return at that time.
Gose struggled during his first stint in the big leagues, hitting just .183 with two RBIs while stealing 10 bases in 28 games. The 22-year-old, who is ranked the club's second-best prospect by MLB.com, still has a bright future with the organization, but needs some more time to mature as a hitter.
Hechavarria also struggled with the bat during his relatively brief stint. He hit just .179, but displayed impressive range in the field, which should come as no surprise since he is considered the top defensive infielder in the Minor Leagues.
The departure of Hechavarria likely means that veteran Omar Vizquel and utilityman Mike McCoy will split duties at third base until Brett Lawrie returns from the 15-day disabled list or Hechavarria is brought back in September.