The two biggest plays the Vikings made on Sunday in Baltimore — Kirk Cousins' 50-yard touchdown pass to Justin Jefferson and Dalvin Cook's 66-yard run — came on their first two third downs of the day, suggesting things could be markedly different from a Week 8 loss to the Cowboys where they'd posted the NFL's worst third-down conversion rate (7.6 percent) of the season.
But as the rest of their 34-31 loss to the Ravens became another study in offensive frustration, there was perhaps no down more emblematic of their struggles than the one they needed to keep drives alive.
The Vikings converted just three of their last 12 third-down attempts for the day, finishing 5-for-14. Of their final seven drives that started in their own territory, only one — their game-tying drive in the final minutes — crossed midfield. Between their two scoring drives and their late touchdown, they picked up just two first downs.
As we try to figure out what the Vikings need to get consistent production out of a talented offense, I thought their third downs on Sunday would provide an interesting case study of their problems. Many of their biggest issues against the Ravens — namely, an inability to open holes for Cook, pressure on Cousins and a few surprising accuracy issues from the quarterback — were on display, as the Vikings' offense stalled out for too much of the game.
First, the run game: The Vikings faced five third downs where they needed three yards or fewer to convert, and ran the ball on the first three of them. The first — Cook's 66-yard run — was a beautiful toss play where Brian O'Neill made two blocks to spring the running back, flattening Josh Bynes on his second block.
On the other two runs (a third-and-goal from the Ravens 2 and a third-and-1 from the Vikings 37), the Vikings simply got beat up front. The Ravens created a pile-up with Christian Darrisaw and Tyler Conklin on the goal line to force a fourth-down attempt (the Vikings went for it and picked up a first down on a pass interference call).

On the third-and-1, the Vikings lined up with Conklin and Luke Stocker to Darrisaw's left and C.J. Ham in the backfield. The Ravens responded by stacking the box, and DeShon Elliot slipped a block from Conklin before tackling Cook for a loss.

Cook gained 110 yards on Sunday, but 105 of them came on three runs: his 66-yarder early, a 24-yarder on the Vikings' final drive and a 15-yarder in the first quarter. The rest of the day, he had trouble finding space to run against a Ravens defense that controlled the line of scrimmage, creating space for linebackers such as Bynes, Tyus Bowser and Patrick Queen to get into the backfield. Even though Cook had his best rushing average of the season (6.47 yards per carry), his numbers were built on three big plays; the Ravens beat the Vikings up front the rest of the day.