Listed below are the top 2016 free agent guards. They are ranked by Walter Football, graded by Pro Football Focus and last contract by Spotrac.
Kelechi Osemele, G/OT, Ravens. Age: 27 grade 79.6 4-yrs. $3,345,870
Evan Mathis, G, Broncos. Age: 34 grade 88.6 1-yr. $3,250,000
Alex Boone, G, 49ers. Age: 29 grade 65 2-yrs. $6,000,000
Jeff Allen, G, Chiefs. Age: 26 grade 85.8 4-yrs. $4,643,822
Richie Incognito, G, Bills. Age: 33 grade 90 1-yr. $1,100,000
Ramon Foster, G, Steelers. Age: 30 grade 82.7 3-yrs. $5,500,000
A familiar name from the Dolphins past, Incognito revived his career in Buffalo. He and Mathis are not only the top graded guards, but also the oldest. Curiously, well-regarded 49ers' Boone was graded poorly by PFF. He's also very expensive.
GM Canamdolphin targets the Chiefs' Allen. He's still young, has an excellent grade and his last contract didn't break the bank. The Chiefs are a good run-blocking team. The Dolphins could use good run blocking to keep the sack hounds off Tannehill. Second choice is the Ravens' Osemele, for many of the same reasons.
The Dolphins won't be able to fill all their holes with the draft. Restructuring a few large contracts would enable the Dolphins to dip a toe (fin?) in the free agent pool to bolster their offensive line. That two of the league's oldest guards had the highest grades shows how much experience matters. As the Dolphins found out, rookies on the offensive line is a risky proposition.