Kevin Correia surrendered five runs in four innings Monday in a loss to the Braves.
Brian Dozier went 0-for-4 as the Twins' leadoff man on Monday, dropping his average to .205.
Ryan Doumit is out of the Twins' lineup for the second straight day Monday.
Twins manager Ron Gardenhire said Friday that Kyle Gibson, P.J. Walters, or Sam Deduno will be called up to start Friday against the Tigers.
Twins recalled LHP Caleb Thielbar from Triple-A Rochester.
Twins optioned LHP Pedro Hernandez to Triple-A Rochester.
Twins activated RHP Cole De Vries from the 15-day disabled list, optioned him to Triple-A Rochester.
Ryan Pressly allowed a run over two mop-up innings in Saturday's 12-5 loss against the Red Sox.
Scott Diamond was hammered for six earned runs in 4 1/3 innings as the Twins lost to the Red Sox on Saturday.
Joe Mauer (back) returned to the Twins' lineup Saturday.
Vance Worley showed some signs of life Friday, as he limited the Red Sox to one unearned run over six innings as part of a no-decision.
Josh Willingham was hitless in four at-bats Friday and is hitting .198 for the year.
Twins assistant general manager Rob Antony said Friday that Rich Harden's rehab has been "slow" and "not very well to be honest".
Twins released LHP Rafael Perez.
Darin Mastroianni will undergo surgery on Wednesday to repair a bone chip on his left ankle, and will be sidelined for at least six weeks.