Former NFL head coach Marty Schottenheimer died Monday after dealing with Alzheimer’s disease for several years. He was 77.

Schottenheimer was diagnosed with Alzheimer’s in 2014. He was moved to a hospice facility near his home in Charlotte, North Carolina, on Jan. 30 because of complications from the irreversible, progressive brain disorder.

Schottenheimer was a head coach for 21 seasons in the NFL, leading the Cleveland BrownsKansas City ChiefsWashington and the Chargers.

He posted a 205-139-1 career record, including the playoffs, leading his teams to the postseason 13 times. Although Schottenheimer coached in three AFC Championship Games, two with the Browns and one with the Chiefs, he never made a Super Bowl.

Schottenheimer also played six seasons as a linebacker for the Buffalo Bills (1965 to 1968) and Patriots (1969 to 1970).

He is survived by his wife, Pat, two children, Kristin and Brian, and four grandchildren.