To make room on the roster for those four players, the Dolphins waived TE Alex Holmes, CB Kris Richard and DT Josh Shaw, and also terminated the contract of CB Mario Edwards.
Then the Dolphins signed seven players to the practice squad: CB Deandre Eiland, WR Fred Gibson, RB Kay-Jay Harris, TE Alex Holmes, P Donnie Jones, WR Maurice Mann and T Orrin Thompson.
All the practice squad players except for Gibson were in training camp with the Dolphins this summer.
Gibson, a rookie from Georgia, was a fourth-round pick of the Pittsburgh Steelers but was beaten out by rookie free agent Nate Washington.
As mentioned, the Dolphins might not be done because published reports indicate the team could be signing former Jacksonville CB Kiwaukee Thomas as soon as Tuesday.
The Dolphins currently have eight defensive backs on the roster, and that's a very low number for the position.
Here's the skinny on the four players claimed off waivers:
Kyle Eckel (claimed from New England) -- A rookie from Navy who is fourth in school history in both rushing yards and touchdowns.
Will Heller (claimed from Tampa Bay) -- He made the Bucs roster as an undrafted rookie free agent in 2003 and has played in 19 games, with 14 career catches. He has great size (6-6, 265) and is more of a blocking tight end.
Eddie Jackson (from Carolina) -- A special teams standout, Jackson spent the first six games of 2004 on the Panthers practice squad before being promoted to the active roster.
Tim McGill (N.Y. Jets) -- This guy has been around, having played in the Arena Football League, AF2 League and NFL Europe, which is where he caught the attention of the Dolphins. McGill spent most of the 2004 season on the Jets practice squad. He is a big-bodied (6-2, 330) run stuffer, which the Dolphins could use to back up starting nose tackle Keith Traylor.