Buxton was optioned to Triple-A Rochester after Thursday's loss to the Yankees, Phill Miller of the Star Tribune reports.
Buxton's struggles at the plate continued Thursday with an 0-for-4 performance that included three strikeouts. With Danny Santana (hamstring) ready to come off the disabled list, the Twins sent their scuffling prospect back to the minors. Buxton hit just .241 with 21 strikeouts in 58 at-bats during his recent 16-game stint with the big league club.