wide receiver did not return to Saturday's playoff victory against the Seattle Seahawks after suffering an apparent knee injury.
Kupp caught four passes for 78 yards in the 30-20 victory at Lumen Field. His status for next week's Divisional Round is unclear.
The 27-year-old set career highs across the board in what was a disappointing 2019 season as a whole for the Rams. He caught 94 passes for 1,161 yards and 10 touchdowns. Football Outsiders ranked him 18th in DYAR (defense-adjusted yards above replacement) among wideouts.
Injuries haven't been a persistent problem for Kupp aside from a torn ACL that limited him to eight games in 2018.