by Harvey Johnson, who previously served as the team's interim head coach in 1968. Cleveland Browns: Blanton Collier resigned and was replaced by Nick Skorich. Green Bay Packers: Phil Bengtson was fired and replaced by Dan Devine. Houston Oilers: Wally Lemm resigned and was replaced by Ed Hughes. Los Angeles Rams: Tommy Prothro became the Rams' new head coach after George Allen left the team. New England Patriots: John Mazur began his first full season as Patriots head coach. He replaced Clive Rush after seven games into the 1970 season due to medical reasons. New Orleans Saints: J. D. Roberts began his first full season as Saints head coach. He replaced Tom Fears, who was fired after a 1-5-1 start in 1970. St. Louis Cardinals: Bob Hollway replaced Charley Winner. San Diego Chargers: Sid Gillman returned to the field after sitting out half of the 1969 season and all of the 1970 season due to poor health. Washington Redskins: George Allen was named as Washington's head coach. Vince Lombardi was diagnosed with terminal cancer in late June before the 1970 season, dying on September 3. Offensive line coach Bill Austin served as Washington's head coach for 1970. In-season Denver Broncos: Lou Saban left the team after a 2–6–1 start. Offensive line coach Jerry Smith served as interim for the remaining five games. Philadelphia Eagles: Jerry Williams was fired after three games. Ed Khayat was named as replacement. San Diego Chargers: Sid Gillman again left the field after serving as head coach for 10 games. Harland Svare replaced Gilman. Stadium changes The newly renamed New England Patriots moved from Harvard Stadium in Boston to their new home field, Schaefer Stadium in Foxborough, Massachusetts. The Chicago Bears moved their home games from Wrigley Field to Soldier Field. The Philadelphia Eagles moved their games from Franklin Field to Veterans Stadium. The San Francisco 49ers moved from Kezar Stadium into Candlestick Park. The Dallas Cowboys moved after their first two regular season home games from the Cotton Bowl to Texas Stadium. 11 teams played their home games on artificial turf in 1971. This was up from 7 teams in the NFL in 1970. The teams were: Chicago, Cincinnati, Dallas, Houston, Miami, New England, New Orleans, Philadelphia, Pittsburgh, St. Louis and San Francisco. Uniform changes The Atlanta Falcons switched their primary jerseys from black to red The Chicago Bears adopted a second white jersey with