Merritt was optioned to Triple-A Columbus on Friday.
Merritt was recently promoted to the Indians on Thursday, but will be headed back down to Columbus after tossing a clean inning during Thursday's contest against the Twins. The 24-year-old could be back with Cleveland in the near future, but for now the left-hander will return to Triple-A where he has a 7-7 record with a 4.06 ERA and a 1.27 WHIP this season.