Sources: Rams' Puka Nacua aggravates knee injury, week-to-week

Los Angeles Rams wide receiver Puka Nacua aggravated his knee injury against the Detroit Lions on Sunday night and, while he still is going through additional testing, he is expected to be considered week-to-week, sources told ESPN's Adam Schefter on Monday.

Nacua suffered the injury while making a catch midway through the second quarter of the 26-20 overtime loss to the Lions. He limped off the field and went into the blue medical tent. Nacua later returned to the game for a short stint before exiting.

He had four catches for 35 yards in Sunday's game before the injury.

Nacua missed several weeks during training camp after injuring a knee in a joint practice. He returned to practice Aug. 26 and was listed as a full participant in the week leading up to Sunday's game.

Nacua set records last season for most receptions (105) and receiving yards (1,486) by a rookie in NFL history.

ESPN's Sarah Barshop contributed to this report.