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Busy afternoon for the Miami Dolphins

The Dolphins added inside linebacker Micah Johnson this afternoon to replace the need created by the season-ending right knee injury to A.J. Edds.

Undrafted out of Kentucky, Johnson was with the Giants this spring when they went through their OTA work. He was waived June 21. Unlike Edds, who is considered a fine coverage linebacker, Johnson is a run-plugger who, frankly, isn't very fast.

Johnson posted times of 4.92 and 4.84 in the 40-yard dash during his pro day at Kentucky, according to reports. I didn't notice that speed (or lack of it) being noticeable during practice because it's hard to tell what is Johnson being slow and what is him being deliberate as he learns a new system.

The Dolphins terminated the contract of Evan Oglesby. The official move is termination non-football illness.

On other fronts:

Running back Ronnie Brown talked to the media in two different interview sessions after practice. He is the most at-ease man with the media on the team. He doesn't dodge questions. He's just great that way.

He's also pretty good on the field, which is one reason Brown admitted the topic of Miami having twin 1,000-yard rusher has come up in conversations between he and Ricky Williams.

"We were talking about it yesterday," Brown said.

Brown says one reason for such optimism is that injuries that have plagued him -- a blown out knee in 2007 and a fractured foot last year -- are not concerns right right. He said the knee "feels great," and the foot is "a  non-issue" that he doesn't even apply extra tape to.

"These last few years, I've had a couple of injuries I've had to deal with," Brown said. "Hopefully that's behind me. The good part is coming into this training camp I actually feel a little bit better than I have the last two or three years. I'm in a little bit better shape and hope I can continue to build on that and see what happens."

My focus during practice today was on the one-on-one pass rush/pass protection drills. So let me tell you what happened, but before I get to that, I should alert you that Nolan Carroll is coming.

He had a pick-six interception of Chad Pennington, his second such play in recent days. It just seems like this kid can move and jump a route with surprising quickness.

Now on to the drill. In this drill three or four offensive linemen take on defensive linemen. While they are lined up in formation, only one OL and one DL go live at a time. They are one-on-one and this is what happened:

Quentin Moses versus Jake Long. Moses pushes Long back but Long doesn't lose contact. Winner: Long.

Tony McDaniel versus Cory Procter. McDaniel gets off the snap fast and strong, basically blowing up Procter. Winner: McDaniel.

Jared Odrick versus Richie Incognito. Odrick is quicker and beat Incognito inside. Winner: Odrick.

Randy Starks versus Andrew Hartline. Starks explodes with a punch then goes around as Hartline loses his balances and falls. Winner: Starks.

Long versus Charlie Anderson. Long swallows Anderson who goes back to the huddle. Winner: Long.

Ryan Baker versus Cory Procter. Baker uses a bull rush and it works. Winner: Baker.

Lydon Murtha versus Erik Walden. Walden flies past, causing Murtha to grab Walden's jersey. Winner: Walden.

Long versus Koa Misi. Misi charges and Long rides him past the QB and out of the play. Winner: Long.

Incognito versus Charles Grant. Grant bull rushes the seemingly bigger Incognito and it works. Winner Grant.

Cory Procter versus Kendall Langford. Langford gets penetration, suggesting he has won, but former Dolphins end Kim Bokamper points out to me that is where the QB would normally step up and get the pass off. Winner: I'm calling it a draw.