Unlike most punters, Seiple did catch and carry the ball on occasion. His most prolific year was 1969 when he netted 577 yards and scored 5 touchdowns, leading the Dolphins in both categories that year. Seiple was often able to rush for yards instead of punting. That type of risk paid dividends for Miami in 1972, in a playoff game against the Pittsburgh Steelers when he ran for a 37-yard gain, keeping a drive alive. Miami would go on to win that game, and the Super Bowl that year, completing a perfect season of 17-0.