Miller brought in his only target for one yard in the Buccaneers' 40-17 win over the Chargers on Sunday.
Miller is being evaluated for a concussion, Scott Smith of the Buccaneers' official site reports.
Miller secured one of three targets for 11 yards in the Buccaneers' 23-20 loss to the 49ers on Sunday.
Miller played 34 of the Buccaneers' 55 snaps on offense and finished with one catch for a one-yard reception on three targets in Monday's 30-24 overtime loss to the Chiefs.
Miller was signed to the Buccaneers' 53-man roster from their practice squad Wednesday, Scott Smith of the Buccaneers' official site reports.
The Buccaneers elevated Miller from their practice squad to their active roster Saturday, Scott Smith of the Buccaneers' official site reports.
Miller signed with the Buccaneers' practice squad Thursday, Scott Smith of the team's official site reports.
Miller signed a reserve/future contract with the Buccaneers on Tuesday, Scott Smith of the team's official site reports.
Tampa Bay elevated Miller to its active roster Saturday.
Miller is signing with the Buccaneers' practice squad Wednesday, Greg Auman of Fox Sports reports.