Gregory Manusky is the current American football

American football

American football is a sport played between two teams of eleven with the objective of scoring points by advancing the ball into the opposing team's end zone. Known in the United States simply as football, it may also be referred to informally as gridiron football. The ball can be advanced by...

 defensive coordinator

Defensive coordinator

A defensive coordinator typically refers to a coach on a gridiron football team who is in charge of the defense. Generally, along with his offensive counterpart, he represents the second level of command structure after the head coach...

 of the San Diego Chargers

San Diego Chargers

The San Diego Chargers are a professional American football team based in San Diego, California. they were members of the Western Division of the American Football Conference in the National Football League...

 of the National Football League

National Football League

The National Football League is the highest level of professional American football in the United States, and is considered the top professional American football league in the world. It was formed by eleven teams in 1920 as the American Professional Football Association, with the league changing...

. He is also a former player, playing linebacker

Linebacker

A linebacker is a position in American football that was invented by football coach Fielding H. Yost of the University of Michigan. Linebackers are members of the defensive team, and line up approximately three to five yards behind the line of scrimmage, behind the defensive linemen...

 for three teams over twelve years. Manusky played college football

College football

College football refers to American football played by teams of student athletes fielded by American universities, colleges, and military academies, or Canadian football played by teams of student athletes fielded by Canadian universities...

 at Colgate University

Colgate University

Colgate University is a private liberal arts college in Hamilton, New York, USA. The school was founded in 1819 as a Baptist seminary and later became non-denominational. It is named for the Colgate family who greatly contributed to the university's endowment in the 19th century.Colgate has 52...

 and high school football at Dallas High School

Dallas High School (Dallas, Pennsylvania)

Dallas High School is a public high school located in Dallas, Pennsylvania, United States. The school educates about 1,000 students in grades 9 to 12 in Dallas School District.- Operation :...

.

Greg Manusky is the current Defensive Coordinator for the San Diego Chargers football team. He has been the Linebackers coach for a few different NFL teams, and was hired in 2007 to be the 49ers Defensive Coordinator. In the 2008 season, when the previous Head Coach of the 49ers, Mike Nolan, was fired, the Assistant Head Coach/Linebackers Coach, Mike Singletary

Mike Singletary

Michael "Mike" Singletary is an American football coach and former professional football player. He is currently the linebacker coach and assistant head coach for the Minnesota Vikings of the NFL....

, took his place and finished the season for the 49ers as the Interim Coach. In the 2009 season Singletary was rehired to become the permanent Head Coach of the 49ers. Manusky remained the Defensive Coordinator for the San Francisco 49ers through the 2010 NFL season.

Following the 2010 season, 49ers head coach Mike Singletary was let go by the team. Former Stanford University

Stanford University

The Leland Stanford Junior University, commonly referred to as Stanford University or Stanford, is a private research university on an campus located near Palo Alto, California. It is situated in the northwestern Santa Clara Valley on the San Francisco Peninsula, approximately northwest of San...

 head coach Jim Harbaugh

Jim Harbaugh

James Joseph "Jim" Harbaugh is an American football coach and former player. He is currently the head coach for the San Francisco 49ers of the National Football League. Harbaugh agreed to a five-year deal with the San Francisco 49ers on January 7, 2011. Previously, he was the head coach at...

 replaced Singletary. Harbaugh gave Manusky permission to interview with other teams, and Manusky quickly lined up interviews with three teams: the San Diego Chargers

San Diego Chargers

The San Diego Chargers are a professional American football team based in San Diego, California. they were members of the Western Division of the American Football Conference in the National Football League...

, Arizona Cardinals

Arizona Cardinals

The Arizona Cardinals are a professional American football team based in Glendale, Arizona, a suburb of Phoenix. They are currently members of the Western Division of the National Football Conference in the National Football League...

 and Dallas Cowboys

Dallas Cowboys

The Dallas Cowboys are a professional American football franchise which plays in the Eastern Division of the National Football Conference of the National Football League . They are headquartered in Valley Ranch in Irving, Texas, a suburb of Dallas...

. Manusky ultimately accepted the Defensive Coordinator job with the San Diego Chargers, with whom he had previously worked as a linebackers coach.