Polanco was optioned to Triple-A Rochester after Saturday's game.
The Twins needed to clear a spot for Tyler Duffey on the 25-man roster, and Polanco was serving as a depth infield option, so he will head back to Triple-A. Polanco has 32 games under his belt at Triple-A, so he could use some more work in the minors, specifically in the field. However, he could serve as an option at shortstop in the second half if that stands out as a position of need on the big league roster.