After graduating from the University of the Pacific in 1958, it took two years for Flores to make a professional football team. He was cut by the Calgary Stampeders of the Canadian Football League in 1958 and by the NFL's Washington Redskins in 1959. Then the AFL was established in 1960 and Flores caught on with the Oakland Raiders. He became the team's starting quarterback early in the season and led the league by completing 54.0 percent of his passes, throwing for 1,738 yards and 12 touchdowns. Flores had his most productive season in 1966. Although he completed only 49.3 percent of his attempts, he passed for 2,638 yards and 24 touchdowns in 14 games. Oakland traded him to the Buffalo Bills in 1967. A backup with Buffalo, Flores was released early in the 1969 season and was picked up the Kansas City Chiefs. He spent the 1970 season on Kansas City's taxi squad, then retired as a player. After serving as an assistant coach with Buffalo and Oakland, Flores took over as head coach of the Raiders in 1979. The franchise moved to Los Angeles in 1982. In nine seasons, he directed the Raiders to three first-place division finishes and Super Bowl victories after the 1980 and 1983 seasons. In 1988, Flores moved into the team's front office but, after a year, he left to become president and general manager of the NFL's Seattle Seahawks. He named himself head coach in 1992. He was fired from both positions after the 1994 season. As a player, Flores completed 838 of 1,715 passes for 11,959 yards and 92 touchdowns. He also rushed for 5 touchdowns. As a coach, he had an 97-87-0 record
