Justin Fields is expected to start for the Pittsburgh Steelers in their Week 3 matchup against the Los Angeles Chargers as Russell Wilson continues to recover from a calf injury. Fields has impressed the coaching staff, including offensive coordinator Arthur Smith and head coach Mike Tomlin, with his pocket presence and smart play, leading the team to a 2-0 start. Despite a low QBR, Fields has demonstrated improvement with a 69.8% completion rate and no turnovers. The Steelers' offense remains a work in progress, but Fields' performance has sparked a competitive quarterback situation. Tomlin has not committed to who will be the starter once Wilson is healthy, emphasizing a focus on current performance over hypotheticals.