Attention to detail isn't necessarily Matt Birk's strong suit. He pointed out after practice Monday that he was wearing two different shoes.
"That's how into shoes I am. Just a fact," Birk said in a self-deprecating tone that drew laughs all around. "I'll take questions now."
Playing center is where Birk, 36, is more detail-oriented.
He sat out the opening preseason game vs. the Atlanta Falcons, who pressured Ravens quarterback Joe Flacco heavily, but started vs. the Detroit Lions last week as the offensive line played more steady.
Coach John Harbaugh still has key decisions to make regarding that group.
Left tackle Bryant McKinnie, who is listed first on the depth chart there but has yet to start a preseason game, has been getting more work as he rounds into better shape. Michael Oher, the starting right tackle, has moved to the left side in McKinnie's place.
With the Ravens focusing on adding a hurry-up package to their attack, McKinnie has to be in better shape. When he reported to training camp, McKinnie was overweight. He could be back in the starting lineup for Thursday's preseason game vs. the Jacksonville Jaguars.
"Bryant is doing well. He's moving well," Birk said. "Bryant has done a good job of being in shape. He's moving as well as I've seen him move in a long time getting his backside blocks and backside cutoffs."
But there's also the issue of left guard Bobbie Williams, who struggled in the opener, rested his sore right ankle last week and possibly could end up in a backup role. Rookie Kelechi Osemele has started at right tackle in Oher's usual spot. Osemele also has spent time as backup left guard and could be shifted into Williams' spot.
The possibilities seem endless.
"He is smart, he is very tough, very long," Harbaugh said of Osemele. "He has a great punch. He probably bends a lot better than most people thought who were evaluating him in the draft. He has really good feet, maybe better than people thought. He has a chance to play either one of those spots. He has given us some flexibility in there."
Birk sees having multiple options as a good thing for the Ravens. Like with his mismatched shoes, he can handle the uncertainty.
"I think we're fortunate. This is the deepest group of offensive linemen we've had since Ive been here," said Birk, in his fourth season with Baltimore. "You really look at it as good fortune. We've tried a different number of combinations and we don't know how it will all shake out."