The junior, who was injured in the first quarter Saturday against Temple, had an MRI on Sunday. He saw his streak of games with a touchdown end at 10.
On Monday, Strong wasn't specific about the severity of the injury as the eighth-ranked Cardinals (5-0, 1-0 American Athletic Conference) prepare to host Rutgers (4-1, 1-0) on Thursday night. Parker, who will be a game-time decision, leads the Cardinals with 21 receptions for 375 yards and six touchdowns.
Though the injury could leave quarterback Teddy Bridgewater without his go-to target, Louisville's receiving corps is one of the team's deepest positions, and Bridgewater has completed passes to at least seven players in every game this season.