sentences:  During games in which the teams are on the road, Steelers fans and Eagles fans alike migrate to the opposing team's stadium and always have a strong presence, and in some cases, their numbers have made opposing teams feel as if they are not in their home stadium—a testament to the die-hard fanbases of professional football in Pennsylvania.Pennsylvania has also been home to two defunct NFL franchises, both of which played in the 1920s.The Pottsville Maroons played in Pottsville, Pennsylvania; the franchise is notable for its part in the 1925 NFL Championship controversy.