Ballesteros was optioned to Triple-A Iowa on Thursday, Elias Schuster of SI.com reports.
Ballesteros will head to Iowa after struggling to a .128 average with one home run, seven RBI, four runs scored and a stolen base over 94 at-bats in his last 34 contests. The 22-year-old will look to hit the reset button at the Triple-A level and then get another shot with the major-league roster down the road this year.