"He's done really well. He's doing all baseball activities," head trainer Paul Lessard said. "He's hitting well. His body is responding well, at least that's what he's telling us."
It is not known yet how many games Hanigan would need before returning to the Reds. He was eligible to be activated on Sunday.
Mark Sheldon is a reporter for MLB.com. Read his blog, Mark My Word, and follow him on Twitter @m_sheldon. This story was not subject to the approval of Major League Baseball or its clubs.