Detroit Lions safety Louis Delmas is day-to-day with a left knee injury that he suffered in the team's 28-24 win over the Seattle Seahawks on Sunday, according to a report by Dave Birkett of the Detroit Free Press. It's unclear how exactly he injured his knee, but he left the game in the third quarter, one play after making a tackle on Seahawks running back Marshawn Lynch.

Delmas has had a series of knee problems sideline him for over the past few seasons. He missed five games at the end of the 2011 season after partially tearing a ligament in his right knee. That injury eventually required surgery. He also had surgery on his left knee in August, which caused him to miss the first four games of the 2012 season.

Either Erik Coleman or Ricardo Silva will take Delmas' starting spot in the Lions' secondary if he can't play this Sunday against Jacksonville.