Pressly was optioned to Triple-A Rochester on Wednesday, Phil Miller of the Minneapolis Star Tribune reports.
Pressly is in a major funk recently, as the 28-year-old has allowed seven runs on four hits (two home runs) while recording just one out over his last two appearances. He also walked two and struck out none over that time, but had a 23:7 K:BB through the prior 18 innings. He'll head back to Rochester to work out some kinks, and if Pressly is able to reduce his contact rate there, he should see another shot with the big club this season. The Twins are expected to announce a roster move ahead of Thursday's series opener against the Angels.