Miller was sent outright to Triple-A Iowa on Monday.
Tovar went 2-for-2 with a solo home run and a double during Monday's 13-3 loss to the Nationals.
Castro went 1-for-4 with a solo home run and a strikeout during Monday's 13-3 loss to Washington.
Feltner (5-8) took the loss after allowing seven runs (five earned) on six hits and four walks. He struck out six.
Steele (elbow) is hoping to start a rehab assignment after throwing two more live bullpen sessions, Taylor McGregor of Marquee Sports Network reports.
The Rockies selected Adams' contract from Triple-A Albuquerque on Monday.
Carrigg is out of the lineup for Monday's game against the Nationals.
Norby will start at second base and bat sixth in Monday's game against the Nationals.
The Rockies placed Freeland on the 15-day injured list Monday due to cervical radiculopathy.
The Rockies are expected to place Freeland on the 15-day injured list Monday while he recovers from a pinched nerve in his neck, Thomas Harding of MLB.com reports.
