Grantland.com issued report cards for all 32 NFL clubs' activities during free agency in spring 2014, and the Vikings received a "B-plus."

Minnesota was listed fifth-best in rankings done by Bill Barnwell that assessed re-signings, arrivals and departures. New England was viewed as the valedictorian, and Denver, which also received an A, was salutatorian.

NFC North foe Detroit was given an A-minus, followed by division champ Green Bay, which received a B-plus. Minnesota was ranked ahead of San Francisco, which also received a B-plus.

All told, 20 teams were given grades of C or better, and 12 were issued C-minus or worse, including Chicago, which checked in as one of three teams with a D. Tampa Bay and New Orleans were the only two teams issued Fs, not far behind their NFC South rivals Atlanta and Carolina, which had D-plusses in a division that finished with each team below .500.

Following is Barnwell's take on the Vikings (**click here** for his full review):

*Re-signed: Matt Cassel, Everson Griffen, Matt Asiata*

*Arrived: Captain Munnerlyn, Linval Joseph, Tom Johnson*

*Departed: Jared Allen, Chris Cook, Toby Gerhart, John Carlson, Kevin Williams*

The Vikings bet big on Griffen, giving a pass-rusher with just one career start a five-year, $42.5 million deal with nearly $20 million in guaranteed money. It paid off; Griffen had 12 sacks despite playing on a team that faced the fifth-fewest pass attempts in football. Johnson was quietly impressive in a limited role, Asiata was a serviceable goal-line back, and both Allen and Gerhart performed far worse outside of Minnesota.

Grade: B-plus

**Click here** for a deeper dive at what worked well for Minnesota in free agency last season from Vikings.com's Mike Wobschall.