Assessing the Ravens' offseason veteran additions

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At 3-4 and below the .500 mark this late in a season for the first time in the John Harbaugh era, the Ravens face an uphill battle in advancing to the postseason for the sixth straight season.
Clearly at a crossroads as the first defending Super Bowl champion since the 2006 Pittsburgh Steelers to hold a losing record after seven games, the Ravens made a number of offseason additions to reload a roster that dealt with free-agent departures, salary-cap casualties, and retirees. It’s time to revisit those moves to see how they’ve worked — or haven’t worked — as the Ravens try to regroup during their bye week.
Grades are included for free-agent signings and trade additions made prior to the start of training camp with the players listed in the order in which they were acquired. Contract terms are listed in parentheses for free-agent additions.
DE Chris Canty (three years, $8 million)
Grade: C+
Skinny: The Ravens needed a 5-technique defensive end and Canty has been solid, but he hasn’t offered as much as a pass rusher as the team would have hoped. Canty is fourth on the team with two sacks, but defensive coordinator Dean Pees has often replaced him with Arthur Jones in the nickel package for improved run support. 
DT Marcus Spears (two years, $2.75 million)
Grade: C-
Skinny: Hamstring and knee injuries have hampered the veteran defensive lineman, but Spears has offered very little when he’s been part of the defensive line rotation and has little pass-rush ability. It would be easy to envision rookie Brandon Williams wrestling away some of Spears’ snaps  in the second half of the season. 
LB Elvis Dumervil (five years, $26 million)
Grade: B+
Skinny: The three-time Pro Bowl selection has been more of a situational player with the run-stopping presence of Courtney Upshaw, but Dumervil has 27 quarterback pressures and is the league’s sixth-most efficient pass rusher, according to Pro Football Focus. He had a miserable day in Pittsburgh, but Dumervil has been the bookend pass rusher Terrell Suggs needed and an upgrade over former Raven Paul Kruger for a cheaper price.
S Michael Huff (three years, $6 million)
Grade: F
Skinny: Huff was benched after a disastrous performance in the season opener against Denver, forcing the Ravens to essentially go with two strong safeties in the secondary with James Ihedigbo and Matt Elam. The former Raider hasn’t taken a defensive snap since Week 4 and has brought very little to special teams, making it possible that he doesn’t even make it through the rest of the season before being cut. 
OT Bryant McKinnie (two years, $6.3 million)
Grade: D
Skinny: Though McKinnie was technically re-signed, he spent almost two months on the open market as general manager Ozzie Newsome explored other options at left tackle before inking him in early May. McKinnie wasn’t the biggest problem along the offensive line before the Ravens acquired Eugene Monroe, but the 34-year-old wasn’t motivated to play at a high level after winning a Super Bowl and receiving a $2 million signing bonus, making his signing a clear mistake as he was dealt to Miami for a conditional late-round pick earlier this week.
C A.Q. Shipley (acquired for 2014 conditional draft pick)
Grade: D+
Skinny: Expectations weren’t very high for the former Indianapolis Colt, but it’s telling that Shipley hasn’t been able to unseat the struggling Gino Gradkowski at the center position. Shipley is undersized and is not a great option as a backup interior lineman, so it will be interesting to see if rookie Ryan Jensen leapfrogs him on the depth chart in the second half since he’s recovered from a broken foot suffered in the first week of training camp.
LB Daryl Smith (one year, $1.125 million)
Grade: A
Skinny: Not only did Smith make most people forget the embarrassing decision to sign troubled linebacker Rolando McClain, but he’s easily been the best bargain of the offseason as his signing was an afterthought that came on the same day the Super Bowl champions visited the White House. His two interceptions lead the team and he’s made everyone forget about the serious concerns that existed at inside linebacker during the offseason. Smith isn’t Ray Lewis, but he’s been as solid as a rock in the middle of the defense.