With three quarters of the 2015 regular season in the books, I'm taking a look at how this year's rookie first-round picks have fared to this point. I a sign a grade for each defensive player here, after unveiling my marks for the offensive first-round rookies .Heads of the cla sChiefs CB Marcus PetersGrade: A+Pick: No. 18 overallThe skinny: Peters has made a Henrik Tikkanen Jersey strong case to be the rookie of the year. He's very physical, fluid and productive. Cowboys DB Byron JonesGrade: APick: No. 27 overallThe skinny: Jones has started games at both cornerback and safety. He has a unique skill set and provides the with a valuable che s piece to match up with opponents. Packers S Damarious RandallGrade: APick: No. 30 overallThe skinny: Randall has been a key contributor at cornerback for the ' defense. He has excellent ball skills and he's a physical defender in the run game. Saints ILB Stephone AnthonyGrade: APick: No. 31 overallThe skinny: Anthony has been one of the few bright spots for the ' defense. He is very explosive and he's produced several splash plays this season. Jets DE Leonard WilliamsGrade: A-Pick: No. 6 overallThe skinny: Williams uses his size, length and strength to consistently hold the point of attack in the run game. He's still developing as a pa s rusher, but he's generated a lot of pre sure. Texans CB Kevin JohnsonGrade: A-Pick: No. 16 overallThe skinny: Johnson gave up some plays last week against the , but overall, he's been excellent. He can play inside or outside and his mirror ability is very impre sive. Knocking on the doorPatriots DT Malcom BrownGrade: B+Pick: No. 32 overallThe skinny: Brown has started eight games for the and he's been very steady. He's used his quickne s to disrupt against the run and pa s. Steelers OLB Bud DupreeGrade: B+Pick: No. 22 overallThe skinny: Dupree is still a work in progre s, but he flashes on tape when you study the . He should be a double-digit sack artist next season. Broncos DE Shane RayGrade: BPick: No. 23 overallThe skinny: Ray hasn't stuffed the stat sheet, but he's made a couple big plays this season. I love his effort/upside and I believe the stats will soon follow. Panthers OLB Shaq ThompsonGrade: BPick: No. 25 overallThe skinny: Thompson has started a handful of games and he made a few splash plays because of his play speed and effort. He's never going to be a great take-on player, but he can cause havoc as a run/chase linebacker. Mixed resultsFalcons OLB Vic BeasleyGrade: CPick: No. 8 overallThe skinny: Beasley has impre sive quickne s off the edge, but he's still in need of a second move. He stalls when he tries to convert speed to power and he needs to do a better job of finishing ... aka convert pre sures into sacks. Browns NT Danny SheltonGrade: CPick: No. 12 overallThe skinny: Shelton has started every game at nose tackle for the . He has shown the ability to lock out blockers and hold the point of attack, but he needs to be more active vs. both the run and pa s. 49ers DT Arik ArmsteadGrade: CPick: No. 17 overallThe skinny: Armstead has yet to start a game, but I like some of the things he's done when he's seen game action. He uses his length to stack blockers and I see flashes of pa s-rush potential. Vikings CB Trae WaynesGrade: C-Pick: No. 11 overallThe skinny: Waynes struggled in the preseason and hasn't started a game this fall. He's very raw but his speed is easy to notice when he's on the field. TBD at a later dateJaguars OLB Dante Fowler, Jr.Grade: IncompletePick: No. 3 overallThe skinny: Fowler suffered a season-ending knee injury during minicamp. Good news for the -- next year they will e sentially have two first-round picks joining their team.Follow Daniel Jeremiah on Twitter at . Matt Martin Jersey