The Seattle Mariners fire manager Darrell Johnson and replace him with Maury Wills
On August 4, 1980 — In the first managerial change in franchise history The Seattle Mariners fire manager Darrell Johnson and replace him with Maury Wills, who becomes the 3rd black manager in major league history. Seattle has lost nine games in a row and 20 of 24 since the All-Star break. The M’s will fare no better under their skipper (20-38, .345), finishing the season 44 games under .500.