The Facts: Johnson injured his right knee shortly after making a diving catch during a 7-on-7 drill. Johnson caught a Philip Rivers pass and quickly popped to his feet. His right knee then twisted while twirling around and looking to run upfield. The 30-year-old slot receiver fell to the ground from the fluke movement, as teammates quickly gathered around him in support.

Diehards Line: HC Mike McCoy was unable to offer a detailed update following practice — the results of an MRI were pending — but the team was left to hope for a prognosis more favorable than the injury appeared. Johnson did not put pressure on his right leg when helped off the field. Upon joining the Chargers last March on a three-year, $10.5 million contract, he endeared himself to teammates with his energy and charisma. On the field, he flashed during the spring and training camp, but groin and hamstring injuries limited him in the regular season. He missed six games, totaling 45 receptions for 497 yards and three scores. Johnson hoped for better health in year two, a chance to truly show what he could do when paired with a franchise-caliber quarterback. The degree to which Sunday's injury stymied that is unclear for now.