Marvin Harrison Jr. enters the 2026 regular season healthy after a 2025 campaign limited to 12 games by multiple injuries, including a concussion, appendectomy, and foot issues that capped him at four receiving touchdowns. The Cardinals’ new head coach and play-caller Mike LaFleur, from the Sean McVay coaching tree, plans to deploy the 6-foot-3 wideout as the primary X-receiver with added motion and slot work to boost separation and red-zone opportunities. Jacoby Brissett’s tendency toward high pass volume offers a favorable environment, yet Harrison must compete for targets with tight end Trey McBride and Michael Wilson, who posted a 1,000-yard, seven-touchdown breakout in 2025 and recently signed a major extension. Preseason reports and training-camp usage indicate a secure starting role and improved chemistry, positioning Harrison for a potential rebound in a pass-oriented Arizona offense.