Warren Moon – Houston/Minnesota/Seattle/Kansas City:
Moon was a gunslinger perhaps ahead of his time. He came into the NFL from the Canadian Football League (CFL) and promptly set it ablaze. Moon racked up yards at will, even throwing for nearly 4,700 yards in 1990 and 1991.
The only things holding Moon back are his lack of NFL playoff success and his time in the CFL. Had he played in the NFL at the outset of his pro career, he could be up there with the greatest passers of all-time. He was a nine-time Pro Bowler who won the NFL Offensive Player of the Year in 1990. Moon threw for a sky-high 49,325 yards with 291 touchdowns and 233 interceptions. He added 22 more scores on the ground. If not for his years in the CFL, Moon may have threatened many of the all-time career passing marks.