The Rams placed Nacua (knee) on injured reserve Wedensday.
As expected, Nacua will now miss at least the Rams' next four games after landing on IR. In his absence, fellow wideout Cooper Kupp should be locked in as the clear-cut top target for quarterback Matt Stafford, while wideouts Demarcus Robinson and Tyler Johnson and tight end Colby Parkinson are candidates to see expanded roles in the passing offense.