The Commanders had the Chargers stopped at the Washington 11-yard line, with Cameron Dicker lined up for a field goal. Dicker made the chip-shot kick, but the Chargers took the points off the board due to a penalty.

Mike Sainristil was flagged for offsides, giving the Chargers a first down. This costly error shifted the momentum in Los Angeles’s favor.

Just two plays later, Justin Herbert connected with Ladd McConkey for a 2-yard touchdown, putting the Chargers ahead 7-0.

During the play, Herbert sustained a cut on his left hand and scraped his elbow after a 41-yard run. Despite the injury, he was efficient on the opening drive, completing 3 of 4 passes for 21 yards.
https://www.nbcsports.com/nfl/profootballtalk/rumor-mill/news/commanders-penalty-leads-to-chargers-opening-touchdown