The vikings.com 2015 Free Agency Preview series uses NFL.com's Top 101 Free Agents list to break down this year's class and take a look at which players may be fits for the Vikings.

1-10: Tuesday
11-20: Monday
21-30: Sunday
31-40: Saturday
41-50: Saturday
51-60: Friday
61-70: Friday
71-80: Thursday
81-90: Wednesday
91-101: **Click here**

The free agents listed 81-90 by NFL.com include three running backs that have been used in rotations and three run stoppers who are likely to shift from starters to shift changers with new teams. It's unlikely that any of the players in this group will be market setters when the NFL's 2015 League Year begins next week.

The Vikings have said they: A) want to bring Adrian Peterson back; and B) **don’t plan to pursue** a running back via free agency. The team also signed run-stuffing defensive tackle Linval Joseph last year and were pleased with the way he adapted to Head Coach Mike Zimmer's system. That combination makes defensive tackle less of a priority. A team can never have enough depth, however, especially at a reasonable rate.

Note: The rankings by NFL.com are subject to change because teams may release players in the coming days, causing them to hit the market.

81. DT Barry Cofield
Cofield is seeking a 10th season. After missing just two games in his first eight seasons, however, he missed eight in 2014. He has played in a 4-3 front with the New York Giants and nose tackle in a 3-4 with Washington. Versatility helps Cofield's case with potential suitors, but turning 31 on March 19 won't.

82. RB Stevan Ridley 83. RB Roy Helu, Jr. 84. RB Ahmad Bradshaw

85. DT Darnell Dockett
The soon-to-be 34-year-old Dockett wants to continue looking through one of the most unique facemasks in the game. He's looking for a new helmet to attach it to after a recent release by Arizona after missing all of 2014. Because Arizona recently released him, teams do not have to wait for free agency to begin if they want to strike a deal with Dockett.

86. DT Ahtyba Rubin
Rubin has been with Cleveland since the Browns selected him in the sixth round of the 2008 NFL Draft. He worked his way into the starting lineup and has played at least 13 games in the past six seasons. Rubin will turn 29 in July when teams report for training camp.

87. DE Adrian Clayborn
Clayborn isn't the most-known name on this list but he may be the most interesting at this point in his career. He will turn 27 in early July. Selected 20th overall by Tampa Bay in 2011, he started nicely with 7.5 sacks. Clayborn, however, missed 13 games in 2012 and all but one in 2014. That could cause teams to vary the risk-reward equation that is so critical to navigating free agency.

88. CB Charles Tillman
A class act with 12 seasons of experience, two Pro Bowls, 36 interceptions (eight returned for touchdowns) and 42 forced fumbles, Tillman has a knack for game-changing plays. Would teams want to add the 34-year-old's leadership to their secondary despite two torn triceps injuries?

89. LB Lance Briggs
Briggs will turn 35 in November, and teams might be slightly deterred by the influx of faster pass-catching tight ends, but he is a seven-time Pro Bowler. After missing just four games in his first 10 seasons, however, Briggs missed 17 in the past two.

90. TE Rob Housler

**Click here*** *for free agents that are ranked 90-101 by NFL.com.