"I'm kind of excited -- get a chance to play at least one game at home for me and test it out," said Janish, a Houston resident who starred at Rice University.
The timing was right for Janish's return. The Reds have an off-day on Thursday before beginning a three-game home series with St. Louis starting on Friday.
"It works out well," said Janish, who has started 22 games at shortstop and five at third base. "Since we have the day off tomorrow, I get to play, and if I have any soreness or anything, I'll have the day to get back to neutral."
Janish injured the ankle rounding third base last Friday against the Cubs. He isn't 100 percent healthy but said the ankle is manageable, and it shouldn't be too cumbersome on the field.
Reds manager Dusty Baker put Janish at third base on Wednesday to break him in slowly as opposed to playing shortstop.
"I don't think it would have mattered a whole lot," said Janish. "In terms of where I was playing, it's just good to be back in general."