Third-year cornerback Chykie Brown can press up on receivers because he is very physical at the line of scrimmage, but he appears stiff when it is time for him to turn and run with them.
Brown played well when he got into the lineup last season, but the more film the opposition got on him, the less effective he was because he didn't accelerate coming out of turns.
Is Leach coming back?
The Ravens are still in the hunt for former starting fullback Vonta Leach, and they'd better get it done quickly. Rookie Kyle Juszczyk might be the fullback of the future, but the kid needs to improve his foot speed and pass blocking.
Maybe it is a sign of things to come, but the Ravens didn't run a lot of two-back sets in practice Thursday with Juszczyk as the lead blocker. There is a belief that Leach will be in training camp soon, but the veteran isn't eager to get here any sooner than necessary.
Cody has company
Fourth-year nose tackle Terrence Cody had better start looking over his shoulder.
Rookie Brandon Williams, the third-round pick out of Missouri Southern, looks good.
He is athletic and explosive off the ball. He should get some playing time this season, and with a year or two in the weight room he has a pretty good future.
Meanwhile Cody, a second-round pick in 2010, has done very little to distinguish himself, and general manager Ozzie Newsome is running out of excuses for why Cody keeps fizzling.
Newsome's Crimson Tide ties with Cody can't keep him on the roster forever.
J. Jones returns to field
It's hard to believe that receiver Jacoby Jones failed a conditioning test.
Jones evidently retook it and passed because he was on the field Thursday.
He didn't have any problems catching his breath as he blew by defenders at practice.
It's just a hunch, but maybe Jones and Harbaugh were still at odds a little about Jones missing a lot of the offseason because he was involved with "Dancing with the Stars."
McClain faces risk
Starting linebacker Jameel McClain (bruised spine) didn't practice because he hasn't been cleared by team doctors.
When you watched McClain run during minicamps in the offseason, he performed well.
It's amazing that a player so young still wants to play because the risk is so much greater than the reward.