<Li> In 1972, the Dolphins had to take their perfect record to Three Rivers Stadium to face the Pittsburgh Steelers, who went 11 - 3, in the AFC championship game . </Li> <Li> In 1973, the Cowboys finished 10 - 4 but hosted two 12 - 2 teams, the Los Angeles Rams and Minnesota . </Li> <P> The league did not institute a seeding system for the playoffs until 1975, where the surviving clubs with the higher seeds were made the home teams for each playoff round . Thus, the top seeded division winner played the wild - card team, and the remaining two division winners played at the home stadium of the better seed (which meant that the lowest - seeded division winner had to open the postseason on the road). However, two teams from the same division could not meet prior to the conference championship game . Thus, there would be times when the pairing in the divisional playoff round would be the 1 seed vs. the 3 seed and 2 vs. 4 . </P> <P> Following an expansion of the regular season from 14 to 16 games in the 1978 season, the league added one more wild - card team for each conference . The two wild - card teams played the week before the division winners . The winner of this game played the top seeded division winner as was done from 1970--1977 . The league continued to prohibit intra-divisional games in the divisional playoffs, but allowed such contests in the wild - card round . This ten - team playoff format was used through the 1989 season . Under this system, the Oakland Raiders became the first wild - card team to win a Super Bowl following the 1980 season . </P>

How do nfl teams get home field advantage
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