The Orioles recalled Nunez from Triple-A Norfolk on Sunday.
The Orioles placed Robert on the 10-day injured list Sunday due to left hamstring discomfort.
Holliday is out of the lineup for Sunday's game against the Red Sox.
Alexander will start at second base and bat leadoff in Sunday's game against the Red Sox, Jake Rill of MLB.com reports.
Bello is expected to be used as a starter or bulk reliever in Monday's game against the Angels at Fenway Park, Ian Browne of MLB.com reports.
Robert isn't starting against Boston on Sunday, Jake Rill of MLB.com reports.
Basallo isn't in the starting lineup versus the Red Sox on Sunday, Jake Rill of MLB.com reports.
Baltimore recalled Hinds from Triple-A Norfolk on Sunday.
The Orioles designated Suarez for assignment Sunday.
Boston placed Rafaela on the 10-day injured list Sunday due to a right quadriceps strain.
