DAVIE — On a day filled with personnel shake-ups around the NFL, the Miami Dolphins welcomed a veteran receiver to practice.

Brian Hartline, one of the team's best pass-catchers the past three seasons, rejoined workouts after missing all four exhibition games because of a left calf injury. He bolsters a receiving group that was lackluster in training camp.

“We've had some rough times,” Hartline said. “Maybe I can add a little spark to the group to ignite us and get us going.”

Hartline's return came as the Dolphins made cuts to reach the regular-season 53-man roster limit while also shopping for upgrades among the players released around the league.

The process continued through the weekend before the team reconvened Monday to prepare for the season opener Sept. 9 at Houston.

Among those waived by the Dolphins were five receivers: third-year pro Roberto Wallace, sixth-round draft pick B.J. Cunningham, undrafted free agents Chris Hogan and Jeff Fuller and Clyde Gates, a fourth-round pick last year.

Two players signed this year as free agents were released: linebacker Gary Guyton and defensive end Jamaal Westerman. Offensive lineman Ryan Cook was traded to the Dallas Cowboys for a late-round draft pick in 2013.

Three quarterbacks remained: Ryan Tannehill, Matt Moore and youngster Pat Devlin.