Biggest holes for all 32 NFL teams

We're six days away from the official start of NFL free agency, and we're four days away from the start of the "legal tampering period." Meanwhile, all eyes were on Indianapolis for the NFL combine last week, and fans are excited to see where their favorite teams go in the draft in April.

What is the biggest need for each of the 32 NFL franchises? Football Outsiders looks here at the biggest hole on each team's roster as of the beginning of March.

Pieces might refer to Football Outsiders' DVOA (defense-adjusted value over average) metric, which takes every play during the season and compares it to a baseline adjusted for situation and opponent. It is explained further here. Sports Info Solutions' charting metrics referenced below are available via subscription at FootballOutsiders.com.

Read through every team, or skip ahead to the division of your choice:

AFC East | AFC North| AFC South | AFC West
NFC East | NFC North | NFC South | NFC West