EL SEGUNDO — The Chargers opened the window Wednesday for outside linebacker Khalil Mack to return to the active roster from injured reserve, and it wasn’t out of the question that he could play Sunday against the Indianapolis Colts after sitting out the required four games because of a dislocated left elbow .

Mack, a nine-time Pro Bowl pick who resumed practicing, would be a huge addition to a defense that has surrendered 27 points in consecutive weeks. The Chargers rallied for a 29-27 victory over the Miami Dolphins on Sunday , one week after a 27-10 loss to the Washington Commanders .

The Chargers (4-2) have given up 20.8 points per game through the first six weeks of the season, ranking 13th in the 32-team NFL. They have given up 23.8 points per game over the past four games in

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