A blog on the Pittsburgh Steelers, Steelers Depot, is scouting the offensive lines in the AFC North. Now up are the Baltimore Ravens, who those same Steelers do not face until weeks 11 and 13 of the 2012 regular season.

The blog, which is not part of SB Nation, likes the Ravens experience on one hand, but cite the average age (31.8) of the five guys who are expected to start the season as a double-edged sword. They wonder how center Matt Birk made it through last season intact and seem to think that it will be difficult to replace the loss of left guard Ben Grubbs regardless of the team's free agent signings of other veteran offensive linemen.

Of course, they also call right tackle Michael Oher, 'serviceable," when many other experts consider Oher among the best right side blockers in the NFL. Therefore, let's hope that Steelers blogs and fans have a lot more to worry about with their own team's offensive line than spend their time worrying about their biggest rivals.