“I don’t think there’s anyone in the National Football League—with the possible exception of George Halas—who’s had as big an impact as he’s had,” said former Raider linebacker Matt Millen.” … [Al Davis] influenced a ton of things, either overtly, by pushing for rules, or covertly, by twisting the rules.”
Under Davis, the Raiders developed a reputation as football’s last-chance saloon, a winning franchise built around rejuvenated players who were discarded by other teams who considered them too old, too unruly, or otherwise undesirable. It was Davis who introduced the silver-and-black uniforms and pirate logo when—at the age of 33—he was hired by the Raiders in 1963 as head coach and general manager. He also assigned the mottoes “Pride and Poise” and later “Commitment to Excellence.”
From the Los Angeles Times.