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.

Facing off against the Rams, Chargers WR Quentin Johnston left SoFi with an apparent head injury and was hospitalized for further testing.

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.