Tom Flores began his run with the Raiders back in 1960 as a player, and he remained with the team in that capacity until 1966. In 1979, Flores would take over as the head coach of the Silver and Black, and would lead the team to two Super Bowl victories, becoming the Minority head coach to win a Super Bowl.
In fact, Flores is one of only two people in the history of the NFL to win a Super Bowl as a player, head coach, and assistant coach. He won his Super Bowl as a member of the Kansas City Chiefs, his title as an assistant under John Madden, and of course his own two as head coach of the Raiders.
Flores accomplished so much during his time as head coach of the Raiders, finishing 30 games over .500 for his career. That includes the 1987 season, where the team went 5-10, and Flores made the move into the front office. He would finish his coaching career with the Seattle Seahawks, but he will forever be known for what he did during his time with the Oakland and Los Angeles Raiders.
In total, Flores led the Raiders to three AFC West titles, and the team made the playoffs in four of five seasons from 1980-85. He has put his stamp firmly on the franchise, and comes in as our second-best Raiders head coach of all-time.
Oh, and he should be in the Pro Football Hall of Fame already.