The Twins recalled Keirsey from Triple-A St. Paul on Saturday.
The Twins optioned Keirsey to Triple-A St. Paul on Saturday.
The Twins selected Keirsey's contract from Triple-A St. Paul on Thursday, Bobby Nightengale of the Minneapolis Star Tribune reports.
Keirsey (oblique) was activated from the 7-day injured list at High-A Cedar Rapids, according to TwinsDaily.com.
Keirsey (oblique) began a rehab assignment Tuesday with the Twins' rookie-level Florida Complex League affiliate and went 1-for-3 with two runs in his first game with the team.
Keirsey has been placed on the seven-day injured list at High-A Cedar Rapids, retroactive to August 11, with a right oblique strain.
Keirsey (hamstring) was activated from the seven-day injured list at High-A Cedar Rapids.