Kaleb Johnson, the Steelers' 3rd-round rookie, has stumbled early. A Week 2 kickoff muff opened the door for Seattle, with George Holani returning it for a TD. Johnson entered the season to replace Najee Harris and has touched the ball sparingly (Week 1: -1 yards; Week 2: 1 yard before the fumble). A Barry Foster-style comeback would be a lifeline for Pittsburgh’s backfield and fantasy managers watching his workload closely.