Steve McKinney signed, along with 3 rookies

Perhaps in an attempt to compensate for the release of Drew Mormino, Miami has signed C Steve McKinney, brother of former Dolphin Seth McKinney.
McKinney (6'4", 302 lbs.) was a fourth round draft pick of the Colts in 1998. He has experience playing both guard and center. He is 32 years old and is coming off a season in which he only played three games due to a torn right knee ligament. He says that his knee is at 75-80% health right now but that he should be full speed by the time training camp rolls around.

In Miami, he will likely compete for one of the starting guard spots, but if he makes the team I'd much rather see him serve as a versatile backup. He's a solid player, but given his age and recent injury it's unlikely that he's going to get any better at this point in his career. The Dolphins need to find out right away what they have in their rookies Shawn Murphy and Donald Thomas. One of those two youngsters should get the opportunity to start. Guard is probably one of the easiest positions to insert a rookie into, so it shouldn't be a big deal to start one of those two guys.

McKinney brings plenty of starting experience to Miami, opening 133 of the 144 games he's played in during his career. He is also rarely flagged for penalties, having a mere 15 called against him over the span of ten seasons. He does however have a tendency to let up sacks, and that's something that has only gotten worse as he's aged.

Career Offensive Line Stats
Year	Team	G	GS	Pen	Yds	False Start	Holding	Sacks Allwd	Yds
1998	Ind	16	16	4	31	2	2	1.50	10.00
1999	Ind	15	14	1	10	0	1	2.00	16.00
2000	Ind	16	16	2	20	0	2	1.50	8.00
2001	Ind	14	14	0	0	0	0	2.50	13.50
2002	Hou	16	16	2	10	2	0	2.00	11.50
2003	Hou	16	16	3	25	1	2	3.75	8.25
2004	Hou	16	16	0	0	0	0	3.50	21.50
2005	Hou	16	16	3	15	3	0	9.25	69.00
2006	Hou	16	6	0	0	0	0	0.50	1.50
2007	Hou	3	3	0	0	0	0	1.00	11.00
Totals		144	133	15	111	8	7	27.50	170.25

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Miami also signed three more of its draft picks, inking RBs Jalen Parmele and Lex Hilliard and DT Lionel Dotson to multi-year deals. With T Jake Long already under contract, the Dolphins have signed four of their nine draft picks.

The team also signed rookie free agent C Matt Spanos out of USC. Spanos (6'5", 317 lbs.) played tackle for a majority of his college career, but has experience playing guard and center as well. Here's a scouting report on Spanos.