Roby played sixteen seasons in the NFL and had 992 punts for 42,951 yards. His career yards per punt average was 43.3, with a net average of 34.0. He had 298 punts beyond the 20-yard line and 112 touchbacks. Roby helped popularize the now-standard two-step approach and often wore a watch to gauge his hangtime. He was one of a handful of African American kickers in National Football League history. He was one of the only kickers, to this day, to punt the ball without jumping.