Justin Herbert has thrown just four passing touchdowns through four games in 2026 while posting a 59.7% completion rate, 816 yards, and six interceptions for the 0-4 Los Angeles Chargers. The offense under new coordinator Mike McDaniel has posted the league’s second-worst passer rating and third-highest sack total, hampered by a rash of offensive-line injuries that include Pro Bowl left tackle Rashawn Slater (ankle surgery, month-to-month), guard Trevor Penning (IR), and right tackle Joe Alt (neck). Four rookies are now starting up front, limiting protection and play-action opportunities. Herbert’s next stretch features road games against Kansas City and Baltimore plus a home matchup with Houston after Sunday’s contest versus Denver.