Currently, there are a total of eight pro football leagues in existence in North America, including the NFL. Out of these, five are indoor entities. Plus, the XFL has already declared it will re-boot in 2020 and will be added to this list.
Add another league to that inventory with the announcement of the “Alliance of American Football” (AAF) to begin play one year ahead of the XFL in the spring of 2019.
This new league will be comprised of eight teams with 50-man rosters amongst a 10-week season followed by a four-team playoff. Former NFL players, recently cut NFL and CFL players, star indoor players plus other free-agents are the initial target group for rosters.