Here is a list of players that were injured during Week 1 in the NFL.
Delanie Walker, TE, Titans - Ankle (Out)
Walker sustained an injury to his right leg and was immediately carted off the field. His leg was placed in an aircast.
Marcus Mariota, QB, Titans - Elbow (Questionable)
Mariota was ruled questionable to return after suffering an elbow injury during Sunday's rain-delayed contest against the Dolphins.
Taylor Lewan, OT, Titans - Concussion (Out)
Lewan was ruled out by the Titans after suffering a concussion.
Randy Gregory, DE, Cowboys - Concussion (Out)
Gregory was ruled out after being evaluated for a head injury against the Panthers.
Greg Olsen, TE, Panthers - Foot (Out)
Olsen left during the first half against the Cowboys after suffering a foot injury. He had a back injury that rendered him questionable leading up to Sunday's opener. The Panthers ruled him out for the rest of the game, and he was seen wearing a boot.
Doug Baldwin, WR, Seahawks - Knee (Out)
Baldwin was ruled out by the Seahawks after suffering a knee injury against the Broncos on Sunday. Coach Pete Carroll told reporters after the game that he sprained his MCL.
DeSean Jackson, WR, Buccaneers - Concussion (Out)
Jackson suffered a concussion against the Saints, the team announced. He left the contest early.
Marquise Goodwin, WR, 49ers - Right Quad (Returned After Being Ruled Questionable)
Mike Person, OG, 49ers - Foot (Questionable)
Joshua Garnett, OG, 49ers - Foot (Questionable)
Leonard Fournette, RB, Jaguars - Hamstring (Out)
Fournette was downgraded from questionable to out due to a hamstring injury he suffered early in the second quarter against the Giants.
Seantrel Henderson, RT, Texans - Broken Ankle (Out)
Henderson was ruled out against the Patriots after suffering a broken bone in his ankle, per NFL Network's Mike Garafolo.
Kevin Johnson, CB, Texans - Concussion (Out)
Johnson was ruled out after suffering a concussion in the third quarter against the Patriots.
Trae Waynes, CB, Vikings - Knee (Questionable)
Waynes was ruled questionable after appearing to suffer a leg injury during the second quarter against the 49ers. He did not return to the contest.