NFL preseason Week 1 storylines: Fernando Mendoza's debut, Packers RB intrigue and Browns QB battle

Key Points:

• The 2026 NFL preseason opens with key storylines including the Detroit Lions' offensive line struggles due to injuries and new faces like Seth McLaughlin and Blake Miller stepping up to protect Jared Goff.
• The Green Bay Packers will spotlight running back MarShawn Lloyd, who has a chance to secure a role amid injuries and off-field issues affecting other backs, while the Colts showcase backups Anthony Richardson Sr. and Riley Leonard as they manage Daniel Jones' Achilles recovery.
• The New England Patriots' rookies Caleb Lomu and Eli Raridon are drawing attention for their potential impact, especially Raridon's blocking and receiving skills, which could enhance the team's offensive versatility.
• The Los Angeles Chargers' preseason will reveal how new defensive coordinator Chris O'Leary's aggressive blitzing style contrasts with his predecessor, with rookies Akheem Mesidor and Jake Slaughter expected to be key contributors.
• Other notable matchups include the Raiders debuting top draft pick Fernando Mendoza, the Browns featuring exciting young players like Denzel Boston and KC Concepcion amid a quarterback competition between Deshaun Watson and Shedeur Sanders, and the Vikings potentially unveiling Kyler Murray as their starting quarterback under coach Kevin O’Connell.