The Cubs designated Wantz for assignment on Wednesday.
The move corresponds with the Cubs selecting Jake Woodfood's contract from Triple-A Iowa. Wantz made his second major-league appearance Tuesday against the Cardinals, when he allowed one run on three hits and one walk over two innings. If he clears waivers, Wantz will have the option of accepting an outright assignment to remain with the Cubs or explore opportunities as a free agent.