 Complete the following phrase:  In their inaugural AFPA season, the Pros posted an undefeated, 803 season. As a result, they were the first team in the history to complete a non-modern perfect season. Only four other teams has accomplished this feat: the 1922 Canton Bulldogs at 1002, the 1923 Canton Bulldogs at 1101, the 1929 Green Bay Packers at 1201, and the 1972 Miami Dolphins at 170. Prior to 1972, the NFL did not count ties into winning percentage; however, in that year the NFL retrospectively altered its standings to treat tied games as being worth half of a win. With that being said, the 1972 Miami Dolphins are the only team to have a modern perfect season. Three other teams accumulated a perfect regular season record, but lost in the post season. The 1934 Chicago Bears posted a 130 record but lost in the 