The Vikings had some low points in their loss to the Bengals in Week 1. Minnesota struggled to cover passes. The team was neglected in the offensive, committing a lot of false restraints and penalties on the start.
The Vikings have to re-evaluate and find out what went wrong. These are some players that need to improve, according to PFF.
Just a note: the players on this list played at least 15 snapshots in total. Players who played less than this, even if they received lower scores, are not included.

Minnesota Vikings face Brian O’Neill, left, center, Garrett Bradbury, center, and rookie Christian Darrisaw, chatting during the NFL football team’s training camp on Wednesday August 4, 2021, in Eagan, Minnesota. (Photo by AP / Jim Mone)
PFF grade: 37.4

January 3, 2021; Detroit, Michigan, USA; Minnesota Vikings Tyler Conklin (83) before the game against the Detroit Lions at Ford Field. Mandatory credit: Raj Mehta-USA TODAY Sports
PFF grade: 46.6

January 3, 2021; Detroit, Michigan, USA; Minnesota Vikings offensive lineman Rashod Hill (69) before the game against the Detroit Lions at Ford Field. Mandatory Credit: Tim Fuller-USA TODAY Sports
PFF grade: 49.7

August 17, 2020; Jacksonville, Florida, USA; Jacksonville Jaguars wide receiver Dede Westbrook (12) runs with the ball after the catch during the training camp at the Dream Finders Homes practice complex. Mandatory Credit: Douglas DeFelice-USA TODAY Sports
PFF grade: 56.2

Minnesota Vikings offensive lineman Oli Udoh, 74, warms up before an NFL football game against the New Orleans Saints on Friday, December 25, 2020 in New Orleans. (AP Photo / Tyler Kaufman)
PFF grade: 57.9

September 12, 2021; Cincinnati, Ohio, USA; Cincinnati Bengals receiver Tee Higgins (85) is defended by defensive back Bashaud Breeland (21) of the Minnesota Vikings during the second quarter at Paul Brown Stadium. Mandatory credit: Joseph Maiorana-USA TODAY Sports
PFF grade: 26.0

Minnesota Vikings cornerback Mackensie Alexander is set to play during the first half of an NFL preseason football game against the Arizona Cardinals on Saturday, August 24, 2019 in Minneapolis. (Photo by AP / Jim Mone)
PFF grade: 39.6

Minnesota Vikings defensive end Sheldon Richardson (90) plays defensive end Tothom Griffen (97) during the first half of an NFL football game on Sunday, September 12, 2021, in Cincinnati. (Photo AP / Aaron Doster)
PFF grade: 40.3

Kansas City Chiefs quarterback Shane Buechele on the right is hit by DJ Wonnum (98) of the Minnesota Vikings defensive end during the first half of an NFL football game on Friday, August 27, 2021 , in Kansas City, Mo (AP Photo / Charlie Riedel)
PFF grade: 42.3

September 12, 2021; Cincinnati, Ohio, USA; Cincinnati Bengals quarterback Joe Burrow (9) moves away from Minnesota Vikings defensive end Everyone Griffen (97) during the second quarter at Paul Brown Stadium. Mandatory credit: Joseph Maiorana-USA TODAY Sports
PFF grade: 52.0