Vikings receiver Olabisi Johnson's third NFL season has already come to an end after he tore an ACL during Friday's practice, a league source confirmed.

Johnson went down clutching his leg while running a route in passing drills. The 2019 seventh-round pick popped up quickly and walked off on his own, making the injury appear minor, but testing revealed a torn ACL.

The injury thins the Vikings' receiver depth, which general manager Rick Spielman said before camp he expected to be one of the team's most competitive positions. Second-year receiver K.J. Osborn was heavily involved during the first week while the newest Viking, Dede Westbrook, remains limited nine months removed from a torn ACL. Chad Beebe and rookie Ihmir Smith-Marsette are also in the mix.

Johnson, who opened the 2020 season as a starter opposite Adam Thielen, caught 45 passes for 483 yards and three touchdowns in his first two NFL seasons.