Even though it's only the second week of training camp, Ravens offensive coordinator Cam Cameron has to be concerned.

The quarterbacks are, at best, inconsistent.

The offensive linemen are dropping like 300-pound flies.

And even when the protection is solid and the throws are there, the receivers are not always holding onto catchable passes.

There was one point early in today's morning practice when three or four straight balls went through the hands of their intended targets, though second-year wideout Matt Willis made a terrific grab in stretching out over the middle to catch one of Troy Smith's slightly errant throws.

Smith was up and down, making a couple of great throws (a deep ball in the end zone to Justin Harper and later one to Darnerian McCants) but also had two passes picked off, one early by linebacker Robert McClure and later on when the second-year quarterback tried to jam a throw into double coverage and was intercepted by David Pittman.

Though rookie Joe Flacco didn't have his worst practice as a Raven, today was another indication that the first-round pick is a work in progress. Playing mostly with backups, Flacco seemed to be off-target for much of the practice. In fact, he made his best play with his feet, stepping out of pressure and scampering about 20 yards before the play was whistled dead.

If anything, the much-maligned Kyle Boller was probably the most consistent of the bunch, including threading a nice pass over the middle to Willis McGahee. Neither Boller nor Smith have yet to separate themselves in their pursuit of the starting job.

Who'll be blocking for them is another question, especially at left tackle.

With both Jared Gaither and Adam Terry out with injuries, it has been left second-year player Mike Kracalick to fill the spot left vacant by perennial All-Pro Jonathan Ogden. Kracalick definitely has the size (6-8, 340), but he needs work on his footwork. Rookie free-agent linebacker Jameel McClain, seven inches shorter and 90 pounds lighter, did a great swim move to get into the backfield.

Another observation is that the more physical camp under coach John Harbaugh is taking its toll. The practice field looked a little empty today, with 15 players out with an assortment of injuries and a couple of others hobbling off the field for stretches. There were also five players given the morning off by Harbaugh as part of his plan to rest some of his 30-and-over crowd, and two others, Terrell Suggs and Samari Rolle, were not in camp.

One final observation: Give Harbaugh credit for getting out there on a kickoff drill. Though he looked more like one of those old-time cabdrivers with a yellow cover to his cap, Harbaugh got into the mix before smartly pulling up in front of Oniel Cousins. Considering the feistiness Cousins showed during the OTAs, I wonder if the rookie tackle from UTEP gave any thought to popping the head coach. As it turned out, Harbaugh came away grabbing his left hamstring.