More and more leagues are adding an extra wrinkle to their leagues with the addition of individual defensive players (IDP). Make sure you familiarize yourself with your league's scoring before investing in any IDP. For example, defensive linemen and defensive backs don't score as high, generally, as linebackers. So if you're going to invest in any IDP, go with a LB first. Here are some sleepers to target:

TEAM DEFENSE/ST
San Francisco 49ers – Mike Singletary was one of the toughest, meanest linebackers in the history of the NFL. His influence as the head coach of the 49ers is starting to show on the defense, led of course by the best defensive player in the NFL, Patrick Willis. While he's the anchor of the squad, there are a lot of young players surrounding Willis. And, the Niners play in arguably the weakest division in the NFL and this makes them a nice sleeper for your squad.

Also like: Jaguars, Panthers, Redskins

DEFENSIVE LINE
Haloti Ngata (BAL) – Everyone says the Ravens are an old defense, but those people are overlooking some of the truly young, amazing talent on the Ravens squad. Ngata is case in point. His numbers aren't overpowering (which is the reason he's on a sleeper list), he was a force up the middle before tearing his pectoral muscle. Now this year, the gig is his full-time and the Ravens added to the line by drafting Terrence Cody to occupy space. Grab Ngata late in any draft and reap the benefits.

Also like: Kyle Vanden Bosch (DET), Derrick Harvey (JAX), and Cliff Avril (DET)

LINEBACKERS
Stewart Bradley (PHI) – Bradley missed all of last year with a knee injury but is fully healthy and ready to wreak havoc up the middle of the Eagles defense Bradley has 100 tackle potential and will slip off most owner's radar, but you can snag him late for great value.

Also like: James Morrison (JAX), Roland McClain (OAK), D'Qwell Jackson (CLE)

DEFENSIVE BACKS
Dashon Goldson (SF) – When I draft DBs, I try to steer clear of the guys who are the ball hawks, like Darrelle Revis. Revis is a stud, don't get me wrong, but he's so good, his numbers don't translate well in fantasy. Also, I don't like relying on INTs to get my points from DBs, instead I like guys who are around the ball. That leads me to Goldson, the 49ers free safety. He had 76 tackles last year. As mentioned, I love the Niners defense this year and Goldson is a big part of that.

Also like: Leon Hall (CIN), Aqib Talib (TB), Earl Thomas (SEA)

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Fantasy Football fantasy football advice, mike singletary's eyes, haloti ngata, individual defensive players