Both of the Ravens' starting offensive guards suffered minor injuries with magnetic resonance imaging exams Monday confirming that diagnosis.

Ravens coach John Harbaugh said that Pro Bowl right guard Marshal Yanda, who left the game briefly to head to the locker room to have his right knee re-taped, tweaked his knee and ankle.

"He's moving around," Harbaugh said of Yanda, who indicated after the game that the knee felt great. "The MRIs are positive there."

An MRI of left guard Bobbie Williams' ankle revealed it was just a sprain. Williams had surgery on his right ankle last December after fracturing it against the Houston Texans when he was playing for the Cincinnati Bengals.

"We'll see," Harbaugh said. "We'll probably get him some rest during the week. Those are the only two things that were significant injury-wise."

Harbaugh acknowledged that Pro Bowl defensive tackle Haloti Ngata isn't 100 percent due to right shoulder and right sprained medial collateral ligament ailments.

However, Harbaugh didn't agree with a suggestion that Ngata should be rested to give him time to heal up, stressing that the team needs him to play each week to compete and win football games.

"I thought he played very solidly," Harbaugh said. "He has the shoulder and the knee a little bit, but he is fighting through it. We need him to win every game. Every game, the division championship is on the line. So, we'll just have to take that day by day and week by week and see where we're at."

Pees coaching from the booth

A subtle change to the Ravens' defensive strategy unfolded Sunday, a development that flew under the radar.

Following seven games coaching from the sidelines, defensive coordinator Dean Pees moved to the coaches' booth for the first time this season during the Ravens' 25-15 victory over the Cleveland Browns.

It was an idea that Pees first broached with Harbaugh after a 43-13 loss to the Houston Texans prior to the Ravens' bye, and the Ravens plan to stick with this approach. It appeared to work as the defending AFC North champions shut out the Browns on five red-zone shots, holding them to five Phil Dawson field goals.

"We do plan on doing that going forward," Harbaugh said. "That was Dean's idea. He'd actually brought it up with me a few weeks before that thinking maybe he'd be a little more comfortable doing it that way.

"There are a lot of different ways to do it, but I think he feels good up there where he has a little better view on everything. He can see what's going on and make some corrections and make some adjustments without having to have it communicated."

During the game, the Ravens had inside linebackers coach Don Martindale relay the signals to the players via Pees on his headset.

"It worked really well," Harbaugh said. "The communication was very good."

Young defenders contribute

Although Browns rookie running back Trent Richardson rumbled for 105 yards on 25 carries, there were moments where the Ravens built a defensive wall and contained him.

In particular, inside linebacker Dannell Ellerbe had a solid game considering he has casts on both of his thumbs.

Ellerbe led the Ravens with nine tackles, one for a loss, three quarterback hits and their lone sack.