Ohio Rev. Code § 2329.35: Sheriff may act for master commissioner.

A master commissioner or special master who sells real property shall have the same power to administer oaths that is conferred upon sheriffs. A sheriff may act as a master commissioner. On notice, and for a reasonable compensation to be paid him by a master out of his fees, the sheriff shall attend and make sale for a master who, by reason of sickness, is unable to attend. Sales made by a master must conform to the laws regulating sales of lands upon execution.