Former San Diego Chargers coach Don Coryell, considered by many as the architect of the modern passing game in the NFL, died Thursday at the age of 85.

“He revolutionized the game of football, not only in San Diego, but throughout the entire NFL,” Chargers president Dean Spanos said. “Don Coryell was a legend not only with the Chargers but throughout San Diego. Though unfortunately he did not live long enough to see it, hopefully one day his bust will find its proper place in Pro Football’s Hall of Fame. He will be missed.”

He coached 14 seasons in the NFL, nine in San Diego and five with the St. Louis Cardinals. He had a career record of 111-83-1.