Players from both teams kneeled around the Chargers receiver as medical personnel attended to him. Floyd did appear to be moving his extremities before he was carted off the field.
Floyd was Philip Rivers' go-to receiver in the first half. The 6-foot-5 pass-catcher had five receptions for 102 yards in Sunday's game before being hurt.
Last month, Floyd injured his knee in a collision during practice. At the time, Floyd said he "dodged a bullet" because it wasn't a season-ending injury.