San Diego Chargers fire defensive coordinator Greg Manusky

The San Diego Chargers have relieved defensive coordinator Greg Manusky of his duties, Head Coach Norv Turner announced Thursday.

In 2011, San Diego’s defensive ranking dropped to 16th overall, including 20th against the run and 13th against the pass, after leading the NFL in total defense and pass defense in 2010. The Chargers’ defense on third down struggled in 2011, falling to last in the NFL after finishing fourth overall in 2010.

“I’d like to thank Greg for the passion and enthusiasm he brought to our team and coaching staff this past season,” said Turner.

Manusky just finished his first season as the Chargers’ defensive coordinator. He took over for Ron Rivera, who was hired as the head coach of the Carolina Panthers in 2011.