The past couple of years, the Miami Dolphins have had very solid, and well above average offensive lines.

Ever since Bill Parcells and the rest of the Trifecta came along in the off-season before the 2008 season, the Dolphins have sported some of the best trenches in all of the NFL.

For the most part, the focus in the trenches has been around the run game, emphasizing the run on the offensive side of the ball, and stuffing the run on the defensive.

On the offense side, according to ProFootballFocus.com's rankings against the run, the Fins have both of their starting tackles in the top 16, with Vernon Carey coming in at #4 against the run, and Jake Long at #16.

The Dolphins guards are not as graceful against the run, coming in with three guards all ranked #45 or less.

But the guard position is where the Dolphins were looking to make improvements this summer.

They went out and drafted versatiel guard John Jerry, and signed the menacing Richie Incognito.

The Dolphins are looking to improve the interior of their line, and it is shaping up to have a whole new look to it come this season.

Incognito will undoubtedly be the starting right guard this year, while veterans Donald Thomas and Nate Garner compete with Jerry for the starting left guard spot, that was vacated when Justin Smiley was released earlier in the off-season.

Incognito ranked well above any other guard on the Fins roster in the run game, coming in at #20.

The additions that the Fins made on the O-Line indicate that they want to get more physical, and improve in the run-blocking area.

At center, Jake Grove was ranked #3 in the run game, and the #4 center overall last year, not giving up a sack at all, while backup Joe Berger was ranked #11 in the run game.

The numbers for the Fins offensive line should be taken lightly though. Many were shuffled in and out with various injuries, and this year should feature a more cohesive unit with more chemistry than last years, thus a better unit overall.

It is on the offensive side of the trenches that features the Dolphins deepest unit on the whole roster possibly.

On the defensive side of the ball, the Dolphins feature one of the deepest units on their roster as well as in the league.

The line features some new comers though, with Randy Starks being switched to nose tackle, and rookie Jared Odrick will be competing with veteran Marques Douglas for the starting right defensive end slot that is empty now that Phillip Merling is out for the season with a torn Achilles tendon.

Both new additions are excellent against the run, and the Dolphins now feature one of the best run stopping front seven in the league.

Against the run for defensive ends, Randy Starks and Langford came in at #2, and #6 respectively, with backup Tony McDaniel coming in at #19.

Douglas ranked at #19, and backup Paul Solia came in ranked higher than starter Jason Ferguson against the run.

The Fins lost Ferguson to retirement this off-season, but the additions that they add more than compensate for his loss.

The nose tackle position is pretty much set with Starks looking to get the majority of the snaps this season, with Solia giving him a breather every now and then.

Langford has the left end virtually locked up, so as far as camp battles goes, the right defensive end position may be the most interesting, as both Douglas and Odrick will be pushing each other for the starting job.

Also, as I am writing this, news has come in that the Dolphins have agreed to a contract with defensive end Charles Grant.

Grant has been a 4-3 end his whole career, and has historically performed terribly against the run, so this makes no difference in my mind as to who will get the majority of the playing time this year.

Sure, Grant will get some snaps, but the majority will go to Douglas and Odrick.

Grant may not even be a lock to make the team this year, but does provide the team with some flexibility, and another camp body to provide the all important competition in training camp.

The run defense will be much improved this year, with the Dolphins running out the best possible run stoppers on the team in the starting lineup most likely week in and week out.

The Dolphins goal this off-season was to better themselves in the trenches. Well, mission accomplished. They brought in veterans to compete with the rookies, and nearly everyone specializes in the run game.

In the trenches, the Dolphins should be as good as they come this year.