FOXBORO, Mass. — An impressive NFL debut for Malcolm Mitchell came to a premature end when the New England Patriots rookie wide receiver left Thursday’s game with an apparent arm injury.

Mitchell caught four passes for 55 yards from quarterback Jimmy Garoppolo during the second quarter of New England’s preseason opener against the New Orleans Saints at Gillette Stadium. As he was tackled by De’Vante Harris following his fourth grab, Mitchell’s left arm bent awkwardly at the elbow, and he immediately exited the field flanked by team trainers

(WARNING: The video of Mitchell’s injury is rather graphic. Viewer discretion advised.)

No one wants to see Malcolm Mitchell like this. Probably safe to say his night is over. #Patriots pic.twitter.com/0lvyEWAUQc — Adam Kaufman (@AdamMKaufman) August 12, 2016

UPDATE (9:47 p.m. ET): Mitchell has been ruled out for the rest of the game with an elbow injury.

Injury update: Malcolm Mitchell (elbow) will not return. #NOvsNE — New England Patriots (@Patriots) August 12, 2016

UPDATE (11:25 p.m. ET): A source told NFL Media’s Ian Rapoport that Mitchell’s injury is an elbow subluxation. Initial X-rays came back negative, per the source, and the wideout has an MRI scheduled.

#Patriots WR Malcolm Mitchell suffered an elbow subluxation, source said. X-Rays were negative. The elbow popped back into place. MRI coming — Ian Rapoport (@RapSheet) August 12, 2016

Malcolm Mitchell suffered a dislocated elbow and could be back in four weeks, sources tell me and @kguregian. — Jeff Howe (@jeffphowe) August 12, 2016

UPDATE (12:45 a.m. ET): Mitchell is expected to miss four weeks, a source told ESPN.com’s Mike Reiss.