Amazon Prime Video has been beefing up its sports lineup with Thursday night NFL games and a massive deal with the NBA that begins later this month. Prime Video's sports documentary lineup hasn't caught up with this push, but there are still a handful that you have to see. Watch With Us is sharing our picks for the must-watch Prime Video sports documentaries right now. This month's selections touch upon most of the major league sports, as well as a look back at a great soccer player from the world stage.