Coach Jim Harbaugh said Johnston sustained a concussion when he absorbed a hard hit from Rams safety Tanner Ingle on a deep pass from quarterback Justin Herbert and then struck his head on the turf. Johnston was in jeopardy as he juggled the ball, attempting to latch onto it.

The preseason battle of Los Angeles saw a starting wide receiver carted off with an injury. Here's what we know about Quentin Johnston's status.

Los Angeles Chargers wide receiver Quentin Johnston was carted off the field during the team's preseason matchup with the Los Angeles Rams on Saturday.